TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
HOAR FROST [8 records]
Record 1 - internal organization data 2012-07-17
Record 1, English
Record 1, Subject field(s)
- Glaciology
Record 1, Main entry term, English
- surface hoar
1, record 1, English, surface%20hoar
correct, officially approved
Record 1, Abbreviations, English
Record 1, Synonyms, English
- feathery crystal 2, record 1, English, feathery%20crystal
correct
- hoar frost 2, record 1, English, hoar%20frost
correct
- hoarfrost 3, record 1, English, hoarfrost
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
Crystals, often shaped like feathers, spikes or wedges, that grow upward from the snow surface when air just above the snow surface is cooled to the dew point. 4, record 1, English, - surface%20hoar
Record number: 1, Textual support number: 1 OBS
The winter equivalent of dew. 4, record 1, English, - surface%20hoar
Record number: 1, Textual support number: 2 OBS
surface hoar: term officially approved by the Avalanche Bulletin Terminology Standardization Committee. 5, record 1, English, - surface%20hoar
Record 1, French
Record 1, Domaine(s)
- Glaciologie
Record 1, Main entry term, French
- givre de surface
1, record 1, French, givre%20de%20surface
correct, masculine noun, officially approved
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Dépôt de glace résultant de la congélation de gouttelettes en surfusion sur des surfaces. 2, record 1, French, - givre%20de%20surface
Record number: 1, Textual support number: 1 OBS
givre de surface : terme uniformisé par le Comité d'uniformisation de la terminologie des bulletins d'avalanche. 3, record 1, French, - givre%20de%20surface
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2012-03-07
Record 2, English
Record 2, Subject field(s)
- Atmospheric, Climatic and Meteorological Phenomena
Record 2, Main entry term, English
- hoar frost
1, record 2, English, hoar%20frost
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- hoarfrost 2, record 2, English, hoarfrost
correct
- hoar-frost 3, record 2, English, hoar%2Dfrost
correct
- white frost 4, record 2, English, white%20frost
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Deposit of ice crystals in the form of scales, needles, feathers and fans and which forms on objects in the same manner as dew, except that the water vapour of the air is transformed directly into ice crystals. 5, record 2, English, - hoar%20frost
Record number: 2, Textual support number: 1 CONT
Hoarfrost [is] a deposit of interlocking ice crystals formed by direct sublimation on objects, usually those of small diameter freely exposed to the air, such as tree branches, plant stems and leaf edges, wires, and poles. Also, frost may form on the skin of an aircraft when a cold aircraft flies into warm and moist air or when it passes through air that is supersaturated with water vapor. Hoarfrost is formed similarly to the way dew is formed except that the temperature of the frosted object must be below freezing. Frost forms when air with a dew point below freezing is brought to saturation by cooling. In addition to its formation on freely exposed objects(air hoar), hoarfrost also forms inside unheated buildings and vehicles, in caves, in crevasses(crevasse hoar), on snow surfaces(surface hoar), and in air spaces within snow, especially below a snow crust(depth hoar). Hoarfrost is more fluffy and feathery than rime, which in turn is lighter than glaze. Hoarfrost is designated light or heavy(frost) depending upon the amount and uniformity of deposition. 6, record 2, English, - hoar%20frost
Record number: 2, Textual support number: 1 OBS
Hoarfrost [is] due to nocturnal radiation. Hoarfrost forms during still, clear nights, is small in amount, needlelike in texture, the "needles" approximately perpendicular to the objects on which they occur, and most abundant along the edges. 7, record 2, English, - hoar%20frost
Record number: 2, Textual support number: 2 OBS
hoarfrost: sometimes confused with "rime." 7, record 2, English, - hoar%20frost
Record 2, French
Record 2, Domaine(s)
- Phénomènes météorologiques, climatiques et atmosphériques
Record 2, Main entry term, French
- gelée blanche
1, record 2, French, gel%C3%A9e%20blanche
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Couche épaisse de cristaux de glace produite par le gel d'un dépôt de vapeur d'eau. 2, record 2, French, - gel%C3%A9e%20blanche
Record number: 2, Textual support number: 1 CONT
La gelée blanche est un dépôt de glace, d'aspect cristallin, affectant le plus souvent la forme d'écailles, d'aiguilles, de plumes ou d'éventails. Elle se forme d'une manière analogue à la rosée, lorsque la température du point de rosée de l'air est inférieure à 0 °C. 3, record 2, French, - gel%C3%A9e%20blanche
Record number: 2, Textual support number: 2 CONT
Pour deux raisons, une gelée blanche cause moins de dommage à la végétation qu'une gelée noire : 1) elle tend à isoler la plante d'un froid plus intense, 2) elle libère la chaleur latente de fusion en faveur du milieu. 2, record 2, French, - gel%C3%A9e%20blanche
Record number: 2, Textual support number: 3 CONT
On considère qu'il existe trois types de gelées : Les gelées par advections ou gelées noires ou gelées de plein vent. [...] Les gelées blanches ou gelées par rayonnement. Elles se produisent surtout pendant certaines nuits claires de février ou mars et même éventuellement jusqu'au début mai et occasionnent de gros dégâts sur la floraison. [...] Les gelées par évaporation. 4, record 2, French, - gel%C3%A9e%20blanche
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Fenómenos meteorológicos, climáticos y atmosféricos
Record 2, Main entry term, Spanish
- escarcha
1, record 2, Spanish, escarcha
correct, feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
- helada blanca 2, record 2, Spanish, helada%20blanca
correct, feminine noun
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Precipitación atmosférica de gotitas de agua en estado de sobrefusión que, al entrar en contacto con una superficie sólida (plantas, hilos telegráficos, etc.), se congelan bruscamente sobre ella y la cubren de una capa de pequeños cristales de hielo. 3, record 2, Spanish, - escarcha
Record number: 2, Textual support number: 1 OBS
escarcha; helada blanca: términos utilizados por la Asociación Mundial de la Carretera. 4, record 2, Spanish, - escarcha
Record 3 - internal organization data 2011-08-26
Record 3, English
Record 3, Subject field(s)
- Metrology and Units of Measure
- Atmospheric Physics
Record 3, Main entry term, English
- frost point
1, record 3, English, frost%20point
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- hoarfrost point 2, record 3, English, hoarfrost%20point
correct
- frost-point temperature 3, record 3, English, frost%2Dpoint%20temperature
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
Maximum temperature of formation of hoar frost by sublimation of atmospheric moisture on a cooled polished surface. 4, record 3, English, - frost%20point
Record number: 3, Textual support number: 1 OBS
Analogous to the dew point, it applies when the moisture in the atmosphere will not condense above 0° Celsius. 2, record 3, English, - frost%20point
Record number: 3, Textual support number: 2 OBS
Not to be confused with "freezing point" or "ice point". 5, record 3, English, - frost%20point
Record 3, Key term(s)
- hoar frost point
- hoar-frost point
Record 3, French
Record 3, Domaine(s)
- Unités de mesure et métrologie
- Physique de l'atmosphère
Record 3, Main entry term, French
- point de gelée blanche
1, record 3, French, point%20de%20gel%C3%A9e%20blanche
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Température maximale de formation de gelée blanche par sublimation de l'humidité atmosphérique sur une surface polie refroidie. 2, record 3, French, - point%20de%20gel%C3%A9e%20blanche
Record number: 3, Textual support number: 1 OBS
Ne pas confondre avec le «point de givre» ou le «point de glace». 3, record 3, French, - point%20de%20gel%C3%A9e%20blanche
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Metrología y unidades de medida
- Física de la atmósfera
Record 3, Main entry term, Spanish
- punto de sublimación
1, record 3, Spanish, punto%20de%20sublimaci%C3%B3n
masculine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
- punto de escarcha 2, record 3, Spanish, punto%20de%20escarcha
masculine noun
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
En el caso de una superficie brillante enfriada, temperatura máxima a la que se forma escarcha por sublimación del vapor de agua de la atmósfera. 1, record 3, Spanish, - punto%20de%20sublimaci%C3%B3n
Record 4 - internal organization data 2007-10-31
Record 4, English
Record 4, Subject field(s)
- Atmospheric, Climatic and Meteorological Phenomena
- Air Transport
Record 4, Main entry term, English
- aircraft icing
1, record 4, English, aircraft%20icing
correct, officially approved
Record 4, Abbreviations, English
Record 4, Synonyms, English
- rime icing 2, record 4, English, rime%20icing
correct
- icing 3, record 4, English, icing
correct, officially approved
- aircraft ice accretion 4, record 4, English, aircraft%20ice%20accretion
correct
- ice formation 5, record 4, English, ice%20formation
correct
- ice accretion 6, record 4, English, ice%20accretion
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
Formation of ice, rime or hoar frost on an aircraft. 7, record 4, English, - aircraft%20icing
Record number: 4, Textual support number: 1 CONT
[Rime] is one of the results of an ice storm, and when formed on aircraft it is called rime icing. 2, record 4, English, - aircraft%20icing
Record number: 4, Textual support number: 1 OBS
aircraft icing; icing: terms officially approved by the International Civil Aviation Organization (ICAO). 8, record 4, English, - aircraft%20icing
Record 4, French
Record 4, Domaine(s)
- Phénomènes météorologiques, climatiques et atmosphériques
- Transport aérien
Record 4, Main entry term, French
- givrage d'aéronef
1, record 4, French, givrage%20d%27a%C3%A9ronef
correct, masculine noun, officially approved
Record 4, Abbreviations, French
Record 4, Synonyms, French
- givrage 2, record 4, French, givrage
correct, masculine noun, officially approved
- accumulation de glace 3, record 4, French, accumulation%20de%20glace
feminine noun, officially approved
- formation de givre 4, record 4, French, formation%20de%20givre
feminine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Formation de glace, givre ou gelée blanche sur un aéronef. 5, record 4, French, - givrage%20d%27a%C3%A9ronef
Record number: 4, Textual support number: 1 OBS
givrage d'aéronef; givrage : termes uniformisés par l'Organisation de l'aviation civile internationale (OACI). 6, record 4, French, - givrage%20d%27a%C3%A9ronef
Record number: 4, Textual support number: 2 OBS
accumulation de glace : terme uniformisé par le Comité d'uniformisation de la terminologie aéronautique (CUTA) - Opérations aériennes. 6, record 4, French, - givrage%20d%27a%C3%A9ronef
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Fenómenos meteorológicos, climáticos y atmosféricos
- Transporte aéreo
Record 4, Main entry term, Spanish
- engelamiento de aeronave
1, record 4, Spanish, engelamiento%20de%20aeronave
correct, masculine noun, officially approved
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
- engelamiento 2, record 4, Spanish, engelamiento
correct, masculine noun, officially approved
Record 4, Textual support, Spanish
Record number: 4, Textual support number: 1 DEF
Formación de hielo, rocío blanco o escarcha en una aeronave. 3, record 4, Spanish, - engelamiento%20de%20aeronave
Record number: 4, Textual support number: 1 OBS
engelamiento de aeronave; engelamiento: términos aceptados oficialmente por la Organización de Aviación Civil Internacional (OACI). 4, record 4, Spanish, - engelamiento%20de%20aeronave
Record 5 - internal organization data 2006-12-05
Record 5, English
Record 5, Subject field(s)
- Atmospheric, Climatic and Meteorological Phenomena
Record 5, Main entry term, English
- depth hoar
1, record 5, English, depth%20hoar
correct, officially approved
Record 5, Abbreviations, English
Record 5, Synonyms, English
- sugar snow 2, record 5, English, sugar%20snow
correct
- squares 3, record 5, English, squares
see observation, less frequent, familiar
- hoar frost 4, record 5, English, hoar%20frost
avoid, see observation
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
Ice crystals formed by sublimation within snow, but beneath the snow surface. 5, record 5, English, - depth%20hoar
Record number: 5, Textual support number: 1 CONT
Depth hoar [are] large coarse recrystallized grains of snow that are the end result of the faceting or squaring process within the snowpack, a process driven by temperature gradients. Such crystals are often weak and develop as a result of (locally) strong temperature gradients and resulting vapor pressure differences in the snowpack, especially in shallow snowpacks with cold air temperatures. These grains are formed through re-crystallization of existing snow grains as water vapor is transferred (sublimation and deposition) from warmer regions of higher vapor pressure (near the ground) to colder regions with lower vapor pressure (upper layers closer to the snow surface). 6, record 5, English, - depth%20hoar
Record number: 5, Textual support number: 2 CONT
According to the Colorado Avalanche Information Center (CAIC), shallow snow that sits on the ground under clear skies and cold temperatures creates depth hoar, also known as sugar snow or squares. 7, record 5, English, - depth%20hoar
Record number: 5, Textual support number: 3 CONT
Depth hoar can be found near the base of the snowpack. [Example approved by the Avalanche Bulletin Terminology Standardization Committee.] 8, record 5, English, - depth%20hoar
Record number: 5, Textual support number: 1 OBS
Depth hoar is often the weakest layer in the snowpack and is a potential sliding layer for avalanches. 9, record 5, English, - depth%20hoar
Record number: 5, Textual support number: 2 OBS
Depth Hoar is also called : Temperature Gradient(TG)(but this is an outdated term), sugar snow, squares, sometimes incorrectly called "hoar frost" by old, rural geezers. 4, record 5, English, - depth%20hoar
Record number: 5, Textual support number: 3 OBS
Cup-shaped crystals are a common form of depth hoar. 10, record 5, English, - depth%20hoar
Record number: 5, Textual support number: 4 OBS
depth hoar: term officially approved by the Avalanche Bulletin Terminology Standardization Committee. 11, record 5, English, - depth%20hoar
Record 5, French
Record 5, Domaine(s)
- Phénomènes météorologiques, climatiques et atmosphériques
Record 5, Main entry term, French
- givre de profondeur
1, record 5, French, givre%20de%20profondeur
correct, masculine noun, officially approved
Record 5, Abbreviations, French
Record 5, Synonyms, French
- gobelets 2, record 5, French, gobelets
correct, masculine noun, plural
- neige granulée de profondeur 3, record 5, French, neige%20granul%C3%A9e%20de%20profondeur
correct, feminine noun
- neige coulante 4, record 5, French, neige%20coulante
correct, see observation, feminine noun, Switzerland
- givre interne 5, record 5, French, givre%20interne
masculine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Cristaux de glace formés par condensation solide au sein de la neige, mais sous la surface de la couche neigeuse. 6, record 5, French, - givre%20de%20profondeur
Record number: 5, Textual support number: 1 CONT
La conséquence en est un important changement de forme des cristaux. Ceux-ci deviennent anguleux avec l'apparition de petites facettes, un peu comme sur un diamant. On les appelle grains à face plane [...] Si la transformation dure assez longtemps et si le gradient de température est assez fort, ces cristaux vont grossir et prendre l'aspect de pyramides creuses, les faces striées un peu comme des gradins : leur taille peut devenir remarquable (5 à 6 mm de diamètre). On les appelle gobelets ou aussi givre de profondeur [...] 7, record 5, French, - givre%20de%20profondeur
Record number: 5, Textual support number: 2 CONT
Le givre de profondeur se trouve près de la base du manteau neigeux. [Exemple entériné par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.] 8, record 5, French, - givre%20de%20profondeur
Record number: 5, Textual support number: 1 OBS
givre de profondeur : Les Suisses Romands l'appellent aussi la neige coulante, à cause de sa grande instabilité. 9, record 5, French, - givre%20de%20profondeur
Record number: 5, Textual support number: 2 OBS
givre de profondeur : terme uniformisé par le Comité d'uniformisation de la terminologie des bulletins d'avalanche. 9, record 5, French, - givre%20de%20profondeur
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Fenómenos meteorológicos, climáticos y atmosféricos
Record 5, Main entry term, Spanish
- nieve en forma de azúcar
1, record 5, Spanish, nieve%20en%20forma%20de%20az%C3%BAcar
feminine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
- nieve granulosa en profundidad 1, record 5, Spanish, nieve%20granulosa%20en%20profundidad
feminine noun
Record 5, Textual support, Spanish
Record number: 5, Textual support number: 1 DEF
Cristales de hielo formados por sublimación en el interior de la nieve pero debajo de la superficie nevosa. 1, record 5, Spanish, - nieve%20en%20forma%20de%20az%C3%BAcar
Record 6 - internal organization data 2000-02-08
Record 6, English
Record 6, Subject field(s)
- Meteorology
Record 6, Main entry term, English
- amorphous frost
1, record 6, English, amorphous%20frost
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
Hoar frost which possesses no apparent crystalline structure. 1, record 6, English, - amorphous%20frost
Record 6, French
Record 6, Domaine(s)
- Météorologie
Record 6, Main entry term, French
- gelée amorphe
1, record 6, French, gel%C3%A9e%20amorphe
correct, feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Gelée blanche qui ne possède pas de structure cristalline apparente. 1, record 6, French, - gel%C3%A9e%20amorphe
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Meteorología
Record 6, Main entry term, Spanish
- escarcha amorfa
1, record 6, Spanish, escarcha%20amorfa
correct, feminine noun
Record 6, Abbreviations, Spanish
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record number: 6, Textual support number: 1 DEF
Escarcha que aparentemente no muestra una estructura cristalina. 1, record 6, Spanish, - escarcha%20amorfa
Record 7 - internal organization data 1999-03-16
Record 7, English
Record 7, Subject field(s)
- Meteorology
- Road Maintenance
Record 7, Main entry term, English
- black ice
1, record 7, English, black%20ice
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
Type of glazed frost(e. g. on roads or the superstructures of ships), caused when water falls on a surface that is below freezing temperature. The thin sheet of ice is rather dark in appearance and, unlike white hoar frost or rime, may be hard to see. 2, record 7, English, - black%20ice
Record 7, French
Record 7, Domaine(s)
- Météorologie
- Entretien des routes
Record 7, Main entry term, French
- glace noire
1, record 7, French, glace%20noire
correct, feminine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Glace très mince et presque invisible qui se forme sur la chaussée par condensation de la vapeur d'eau. 1, record 7, French, - glace%20noire
Record number: 7, Textual support number: 1 CONT
La glace noire qui se forme sur le tablier des ponts lorsque la température atteint le point de congélation présente de grands risques d'accident. 1, record 7, French, - glace%20noire
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1991-10-16
Record 8, English
Record 8, Subject field(s)
- Atmospheric, Climatic and Meteorological Phenomena
Record 8, Main entry term, English
- polished surface
1, record 8, English, polished%20surface
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
Frost point. The highest temperature at which atmospheric moisture will sublimate in the form of hoar frost on a cooled polished surface. 1, record 8, English, - polished%20surface
Record 8, French
Record 8, Domaine(s)
- Phénomènes météorologiques, climatiques et atmosphériques
Record 8, Main entry term, French
- surface polie
1, record 8, French, surface%20polie
correct, feminine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
point de gelée. Température maximale de formation de gelée blanche par sublimation de l'humidité atmosphérique sur une surface polie refroidie. 1, record 8, French, - surface%20polie
Record 8, Spanish
Record 8, Textual support, Spanish
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