TERMIUM Plus®

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

TRICLINIC SYSTEM [5 records]

Record 1 2016-02-11

English

Subject field(s)
  • Mineralogy
DEF

One of the six crystal systems, characterized by a onefold axis of symmetry, and having three axes whose lengths and angles of intersection are unconstrained.

OBS

asymmetric : said of crystals... of the triclinic system, which have no symmetry elements...

French

Domaine(s)
  • Minéralogie
DEF

L'un des sept systèmes cristallins, dans lequel la maille primitive est un parallélépipède à base losange.

CONT

Le système triclinique. Le solide fondamental est un prisme oblique à base parallélogramme. Les trois axes fondamentaux du cristal correspondant font un angle quelconque entre eux.

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

[Sistema cristalino que consta de un] prisma oblicuo cuya base es un paralelogramo.

OBS

Carece de ejes y de planos de simetría.

Save record 1

Record 2 2015-04-17

English

Subject field(s)
  • Mineralogy
OBS

A biaxial crystal belongs to the orthorhombic, monoclinic, or triclinic system and possesses "three" significant indices of refraction...

French

Domaine(s)
  • Minéralogie
CONT

Cet «illipsoïde des indices» (E) [...] possède trois axes rectangulaires : 1. L'un correspondant à la direction du plus grand indice («ng»). 2. L'autre correspondant à la direction du plus petit indice («np»). 3. Le troisième normal aux deux précédents et correspondant à un indice moyen («nm»), qui n'est d'ailleurs pas la moyenne arithmétique des deux indices extrêmes. Ces trois indices sont dits «indices principaux» du milieu anisotrope considéré.

Spanish

Save record 2

Record 3 2013-08-21

English

Subject field(s)
  • Mineralogy
DEF

A hydrated calcium borate crystallizing in the triclinic system, occurring chiefly as colourless to white prismatic crystals or fibrous masses as an alteration product of inyoite.

French

Domaine(s)
  • Minéralogie
DEF

Minéral (borate) du système cristallin triclinique, se présentant en cristaux prismatiques fibreux, incolore à blanc.

Spanish

Save record 3

Record 4 2012-04-13

English

Subject field(s)
  • Mineralogy
DEF

... a silicate mineral... known to crystallize in the triclinic system of crystal formation.

CONT

Gyrolite is most commonly found white or colourless in appearance. In optical mineralogy, colourless sections of any mineral allow the whole constituent of the white light to pass through making the mineral non-pleochroic between crossed nicols of polarizing microscopes. ... Gyrolite is most commonly found exhibiting vitreous to dull luster when viewed in reflected light of [a] polarizing light microscope.

French

Domaine(s)
  • Minéralogie
DEF

Minéral (silicate) du système cristallin triclinique pseudo-hexagonal, incolore ou blanc, éclat vitreux.

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Silicato hidratado de calcio y magnesio [...], que cristaliza en el sistema rómbico.

Save record 4

Record 5 1998-11-16

English

Subject field(s)
  • Mineralogy
DEF

A crystal whose unit cell has axes which are not at right angles, and are unequal.

OBS

Asymmetric : Said of crystals of the hemihedral class of the triclinic system, which have no symmetry elements...

French

Domaine(s)
  • Minéralogie
DEF

Cristal ne possédant ni axe de symétrie ni plan de symétrie.

Spanish

Save record 5

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2025
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: