TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ROUNDED GRAIN [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-07-05

English

Subject field(s)
  • Scientific Instruments
  • Destructive and Non-destructive Tests (Mat.)
  • Wood Industries
DEF

An apparatus used for making hardness tests on timber.

CONT

Hardness.... With the change to SI units a special hardened steel tool(known as the Janka hardness tool) rounded to a diameter of 11. 3 mm(projected area 100 mm2) is embedded to one-half of its diameter into the(20 mm) test piece. This tool has a device embodying an electrical contact which rings a signal bell when the correct depth of penetration has been reached... The hardness test is performed... on the static bending specimen... there is a very good correlation between the side hardness of timber, as determined by the Janka hardness tool, and its compression strength perpendicular to the grain.

French

Domaine(s)
  • Instruments scientifiques
  • Contrôle destructif et non destructif (Matér.)
  • Industrie du bois
OBS

duromètre : nom générique des appareils de mesure de dureté.

Spanish

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Record 2 2009-05-07

English

Subject field(s)
  • Geology
DEF

A roundness grade in which considerable wear is shown.

CONT

Arenaceous rocks in which the particle shape is angular to sub-angular are termed grits, while the remainder, with rounded to sub-rounded grains, are termed sandstones.

OBS

[In this grade type] edges and corners are rounded to smooth curves, and the area of the original faces is considerably reduced, but the original shape of the grain is still distinct.

OBS

subrounded: term used at Natural Resources Canada - Earth Sciences Sector.

French

Domaine(s)
  • Géologie
CONT

[...] les grains de sable façonnés par le vent sont généralement piquetés et mats, subsphériques. Ils sont appelés «ronds-mats» en morphoscopie [...]

CONT

[...] des septaria, nodules subsphériques caractérisés par des craquelures radiales et concentriques.

OBS

subarrondi : terme en usage à Ressources naturelles Canada - Secteur des sciences de la Terre.

Spanish

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Record 3 2008-09-23

English

Subject field(s)
  • Atmospheric, Climatic and Meteorological Phenomena
DEF

Snow crystal formed during the equitemperature metamorphism process.

CONT

Rounded Grains are those in which the original form is no longer discernible and the crystal takes on a generally rounded amorphous appearance. Rounded grains typically tend to be smaller grains and are usually significantly smaller than the original grain from which they formed. Typical grain size is often less than 1 mm. Commonly referred to as "rounds" these grains tend to be found in harder or stronger snowpack layers. Rounded grains typically form when there is a weak temperature gradient in the snowpack(<1 degree/10 cm). This weak temperature gradient occurs most often in areas where the snowpack is deep and temperatures are mild.

CONT

There is a strong layer of rounds at the base of the snowpack. [Example approved by the Avalanche Bulletin Terminology Standardization Committee.]

OBS

rounded grain; round : terms officially approved by the Avalanche Bulletin Terminology Standardization Committee.

French

Domaine(s)
  • Phénomènes météorologiques, climatiques et atmosphériques
DEF

Cristal de neige résultant de la métamorphose de faible gradient.

CONT

Il y a une couche résistante de grains fins de forte cohésion située à la base du manteau neigeux. [Exemple entériné par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.]

OBS

Ne pas confondre avec «grain rond» qui se rend en anglais par «melt-freeze particle».

OBS

grain fin : terme uniformisé par le Comité d'uniformisation de la terminologie des bulletins d'avalanche.

Spanish

Save record 3

Record 4 2003-07-22

English

Subject field(s)
  • Geology
DEF

A small, hard, more or less rounded mineral particle, such as a sand grain.

CONT

Sediment texture ... is determined .. by grain size ... Increasing sediment maturity is indicated by ... increasing rounding of the grains within the deposit.

French

Domaine(s)
  • Géologie
DEF

Particule de matière minérale provenant d'une exploitation en carrière, en ballastière ou d'une fabrication.

CONT

Le degré d'usure des sédiments peut [...] être chiffré par des mesures d'arrondi des grains de sable [...]

Spanish

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Record 5 2002-12-09

English

Subject field(s)
  • Xylology (The Study of Wood)
  • Plywood
DEF

A figure produced on smooth flat-sawed and rotary cut surfaces by undulations in the grain(e. g. curly or wavy grain), and having the appearance of more or less widely spaced, raised or depressed areas of rounded contour.

French

Domaine(s)
  • Xylologie (Étude des bois)
  • Contreplaqués
DEF

Apparence du bois contreplaqué dont la surface est parsemée régulièrement de petites formes arrondies et bombées.

Spanish

Save record 5

Record 6 1989-11-15

English

Subject field(s)
  • Strength of Materials
OBS

With the change to SI units a special hardened steel tool(known as the Janka hardness tool) rounded to a diameter of 11. 3 mm(projected area 100 mm2) is embedded to one-half of its diameter into the(20mm) test piece... an electrical contact... rings a signal bell when the correct depth of penetration has been reached... the hardness test is performed... on the static bending specimen.... The rate of penetration of the ball is 0. 11 mm/s... there is a very good correlation between the side hardness of timber, as determined by the Janka hardness tool, and its compression strength perpendicular to the grain.

French

Domaine(s)
  • Résistance des matériaux
OBS

Mesure de la dureté des métaux. On applique, sur une surface légèrement polie du métal (...) une bille en acier spécial très dur (...) sous une charge déterminée. Il se forme alors dans la pièce une empreinte permanente, en forme de calotte sphérique [méthode de Brinell] (...)

Spanish

Save record 6

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