TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
HEMIEDRIE [7 records]
Record 1 - internal organization data 2016-02-25
Record 1, English
Record 1, Subject field(s)
- Mineralogy
Record 1, Main entry term, English
- hemihedral symmetry
1, record 1, English, hemihedral%20symmetry
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- hemihedrism 2, record 1, English, hemihedrism
correct
- hemihedry 2, record 1, English, hemihedry
correct
- hemisymmetry 2, record 1, English, hemisymmetry
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The possession by a crystal of only half of the elements of symmetry which are possible in the crystal system to which it belongs. 1, record 1, English, - hemihedral%20symmetry
Record 1, French
Record 1, Domaine(s)
- Minéralogie
Record 1, Main entry term, French
- hémiédrie
1, record 1, French, h%C3%A9mi%C3%A9drie
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Phénomène par lequel une forme cristalline ne présente que la moitié des faces prévues par la loi de Haüy. 2, record 1, French, - h%C3%A9mi%C3%A9drie
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Mineralogía
Record 1, Main entry term, Spanish
- hemiedria
1, record 1, Spanish, hemiedria
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Propiedad de los cristales que sólo presentan la mitad de las caras que tiene la forma holoédrica correspondiente. 1, record 1, Spanish, - hemiedria
Record 2 - internal organization data 2016-02-12
Record 2, English
Record 2, Subject field(s)
- Mineralogy
Record 2, Main entry term, English
- merohedrism
1, record 2, English, merohedrism
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- merohedry 2, record 2, English, merohedry
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
... the conditioning of a crystal due to symmetrical suppression of half or three fourths of the faces of the holohedral form. 3, record 2, English, - merohedrism
Record 2, French
Record 2, Domaine(s)
- Minéralogie
Record 2, Main entry term, French
- mériédrie
1, record 2, French, m%C3%A9ri%C3%A9drie
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Symétrie des cristaux, lorsqu’elle est inférieure à celle de leur réseau. 2, record 2, French, - m%C3%A9ri%C3%A9drie
Record number: 2, Textual support number: 1 CONT
Il y a [...] deux possibilités : 1° Holoédrie [...] : Molécule et réseau ont les mêmes éléments de symétrie-l'ensemble : le cristal possède tous les éléments de symétrie; 2° Mériédrie : Le réseau n’ a pas tous les éléments de symétrie de la molécule, mais seulement une partie [...] La loi de symétrie n’ est vérifiée que pour une partie des éléments. Si cette partie en est la moitié, c'est l'hémiédrie [...] [et si c'est le quart, c'est la tétartoédrie]. 3, record 2, French, - m%C3%A9ri%C3%A9drie
Record number: 2, Textual support number: 1 OBS
[La mériédrie] s’oppose à l'holoédrie; comprend l'hémiédrie et la tétartoédrie. 2, record 2, French, - m%C3%A9ri%C3%A9drie
Record number: 2, Textual support number: 1 PHR
Mériédrie réticulaire. 4, record 2, French, - m%C3%A9ri%C3%A9drie
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Mineralogía
Record 2, Main entry term, Spanish
- meriedria
1, record 2, Spanish, meriedria
correct, feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Simetría de los cristales que sólo tienen una parte de los elementos de simetría propios de la holoedria [...] 1, record 2, Spanish, - meriedria
Record number: 2, Textual support number: 1 OBS
[La meriedria] comprende la hemiedria y la tetartoedria. 1, record 2, Spanish, - meriedria
Record 3 - internal organization data 2005-07-05
Record 3, English
Record 3, Subject field(s)
- Mineralogy
Record 3, Main entry term, English
- hemihedral
1, record 3, English, hemihedral
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- hemisymmetric 1, record 3, English, hemisymmetric
correct
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
Said of the merohedral crystal class (or classes) in a system, the general form of which has half the number of equivalent faces of the corresponding holohedral form. 1, record 3, English, - hemihedral
Record 3, French
Record 3, Domaine(s)
- Minéralogie
Record 3, Main entry term, French
- hémiédrique
1, record 3, French, h%C3%A9mi%C3%A9drique
correct
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Se dit d’un cristal présentant l'hémiédrie. 1, record 3, French, - h%C3%A9mi%C3%A9drique
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Mineralogía
Record 3, Main entry term, Spanish
- hemiédrico
1, record 3, Spanish, hemi%C3%A9drico
correct
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
Record 3, Textual support, Spanish
Record number: 3, Textual support number: 1 DEF
Dícese del cristal que posee la hemiedria. 1, record 3, Spanish, - hemi%C3%A9drico
Record number: 3, Textual support number: 1 CONT
En un cristal hemiédrico los átomos se encuentran ordenados de tal forma que desaparece uno de los elementos de simetría. La blenda, por ejemplo, cristaliza en forma de cubos pero su simetría es la de un tetraedro. Una troncadura de uno de sus vértices no se repite en los otros siete, sino solamente en tres. En el caso de que esas troncaduras se extiendan en la masa del cristal, pueden llegar a formarse dos tetraedros conjugados cuyas caras no tienen las mismas propiedades. 1, record 3, Spanish, - hemi%C3%A9drico
Record 4 - internal organization data 2005-01-28
Record 4, English
Record 4, Subject field(s)
- Mineralogy
Record 4, Main entry term, English
- enantiomorphic
1, record 4, English, enantiomorphic
correct, adjective
Record 4, Abbreviations, English
Record 4, Synonyms, English
- enantiomorphous 2, record 4, English, enantiomorphous
correct, adjective
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
A crystallographic term applied to forms which are similar but not congruent, i.e. cannot be superimposed even by rotation and/or inversion. 1, record 4, English, - enantiomorphic
Record number: 4, Textual support number: 1 CONT
Enantiomorphic forms are mirror-images of one another, and are generally referred to as being left-handed or right-handed. Quartz crystals are an example. 1, record 4, English, - enantiomorphic
Record 4, French
Record 4, Domaine(s)
- Minéralogie
Record 4, Main entry term, French
- énantiomorphe
1, record 4, French, %C3%A9nantiomorphe
correct, adjective
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Se dit de cristaux qui ne sont pas superposables, mais qui sont images l’un de l’autre dans un miroir. 2, record 4, French, - %C3%A9nantiomorphe
Record number: 4, Textual support number: 1 CONT
Hémiédrie plagiaire [...] ou hémiédrie énantiomorphe [...] caractérisée par l'absence de centre et de plan de symétrie [...] Dans ces conditions, le polyèdre obtenu n’ est plus superposable à son image reflétée par un miroir. Il peut exister deux formes-dites droites et gauches [...] 3, record 4, French, - %C3%A9nantiomorphe
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Mineralogía
Record 4, Main entry term, Spanish
- enantiomorfo
1, record 4, Spanish, enantiomorfo
correct
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record number: 4, Textual support number: 1 DEF
Que tiene la misma forma aunque invertida [...] 1, record 4, Spanish, - enantiomorfo
Record 5 - internal organization data 2004-11-29
Record 5, English
Record 5, Subject field(s)
- Mineralogy
Record 5, Main entry term, English
- antihemihedry
1, record 5, English, antihemihedry
proposal
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 OBS
hemihedry: the property or quality of crystallization in hemihedral forms. 2, record 5, English, - antihemihedry
Record 5, French
Record 5, Domaine(s)
- Minéralogie
Record 5, Main entry term, French
- antihémiédrie
1, record 5, French, antih%C3%A9mi%C3%A9drie
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Hémiédrie caractérisée par l'absence de centre de symétrie mais la présence d’un ou plusieurs plans de symétrie. 2, record 5, French, - antih%C3%A9mi%C3%A9drie
Record number: 5, Textual support number: 1 CONT
Antihémiédrie : Il n’y a plus de centre de symétrie, mais le plan de symétrie est conservé [...] 3, record 5, French, - antih%C3%A9mi%C3%A9drie
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Mineralogía
Record 5, Main entry term, Spanish
- antihemiedría
1, record 5, Spanish, antihemiedr%C3%ADa
correct, feminine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
Record 5, Textual support, Spanish
Record number: 5, Textual support number: 1 DEF
Hemiedría caracterizada por la presencia en el cristal de uno o varios planos de simetría y la falta de centro de simetría. 1, record 5, Spanish, - antihemiedr%C3%ADa
Record 6 - internal organization data 1998-09-22
Record 6, English
Record 6, Subject field(s)
- Petrography
- Mineralogy
Record 6, Main entry term, English
- beta quartz
1, record 6, English, beta%20quartz
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
- B-quartz 2, record 6, English, B%2Dquartz
correct
- B quartz 3, record 6, English, B%20quartz
correct
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
The polymorph of quartz that is stable from 573°C to 870°C, that has a vertical axis of six-fold symmetry and six horizontal axis of two-fold symmetry, and that has a lower refractive index and birefringence than those of alpha quartz. 4, record 6, English, - beta%20quartz
Record number: 6, Textual support number: 1 CONT
Some natural substances exist in various mineral forms (polymorphs) and some use of their inversion temperatures can be made in geothermometry. For example, B-quartz inverts to [alpha]-quartz with falling temperature at 573°C. We can determine wether quartz originally crystallized as B-quartz by etching with hydrofluoric acid, and thus decide whether it was deposited above or below 573°C. 5, record 6, English, - beta%20quartz
Record 6, French
Record 6, Domaine(s)
- Pétrographie
- Minéralogie
Record 6, Main entry term, French
- quartz bêta
1, record 6, French, quartz%20b%C3%AAta
correct, masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
- quartz B 2, record 6, French, quartz%20B
correct, masculine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Déséquilibre thermodynamique des zones liminaires. - [...] Un tel déséquilibre affecte [...] le quartz alpha vers 573 °C, au moment où il se transforme en quartz bêta [...]. À ce moment le quartz présente une sensibilité chimique exceptionnelle et se combine facilement avec des oxydes métalliques alors qu’il ne peut le faire ni avant ni après. 1, record 6, French, - quartz%20b%C3%AAta
Record number: 6, Textual support number: 2 CONT
[...] à 573 °C, le quartz alpha rhomboédrique se transforme en quartz ß. Ce passage s’accompagne d’un état de désordre du réseau cristallin [...] 3, record 6, French, - quartz%20b%C3%AAta
Record number: 6, Textual support number: 3 CONT
Les inversions de la silice sont classiques, en particulier celle du quartz [alpha] en quartz B à 575°. À la température ordinaire le quartz est toujours [alpha](pseudo-hexagonal, rhomboédrique énantiomorphe). Le quartz B(hexagonal, hémiedrie énantiomorphe) inversé en quartz [alpha] par refroidissement peut être reconnu à certains caractères, par exemple à un maclage irrégulier et à une fracturation très poussée [...] 4, record 6, French, - quartz%20b%C3%AAta
Record number: 6, Textual support number: 4 CONT
Quartz haute température (quartz ß). 5, record 6, French, - quartz%20b%C3%AAta
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1991-10-03
Record 7, English
Record 7, Subject field(s)
- Mineralogy
Record 7, Main entry term, English
- parahemihedry
1, record 7, English, parahemihedry
proposal
Record 7, Abbreviations, English
Record 7, Synonyms, English
- parahemihedrism 1, record 7, English, parahemihedrism
proposal
Record 7, Textual support, English
Record number: 7, Textual support number: 1 OBS
See hemihedrism: WEBIN, 1976, p. 1054. 1, record 7, English, - parahemihedry
Record 7, French
Record 7, Domaine(s)
- Minéralogie
Record 7, Main entry term, French
- parahémiédrie
1, record 7, French, parah%C3%A9mi%C3%A9drie
correct, feminine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Hémiédrie possédant un centre de symétrie. 2, record 7, French, - parah%C3%A9mi%C3%A9drie
Record number: 7, Textual support number: 1 CONT
Hémiédrie : C'est la forme de mériédrie la plus fréquente, elle se présente sous trois aspects : a) Parahémiédrie : Dite aussi à faces parallèles dans laquelle le centre du symétrie est conservé [...] b) Antihémiédrie [...] c) Hémiédrie plagiaire [...] 3, record 7, French, - parah%C3%A9mi%C3%A9drie
Record 7, Spanish
Record 7, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2024
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada
Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools
The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies
Access Translation Bureau glossaries and vocabularies.
- Date Modified: