TERMIUM Plus®

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

ALLOMORPHE [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2011-06-21

English

Subject field(s)
  • Mineralogy
DEF

Said of minerals crystallizing in various crystal systems while keeping the same chemical composition.

CONT

There are ... numerous possible polymorphic modifications or structural states of alkali feldspars, depending upon the extent of ordering of Al ions throughout the structure.

OBS

Not to be confused with "allomeric" (or "allomerous") which is used for minerals having the same crystalline form but a different chemical composition.

French

Domaine(s)
  • Minéralogie
DEF

Décrit des minéraux qui, tout en ayant la même composition chimique, cristallisent dans des systèmes différents.

CONT

Calcite et aragonite sont des minéraux polymorphes.

Spanish

Campo(s) temático(s)
  • Mineralogía
DEF

Dícese de las sustancias químicas que se prestan al polimorfismo, [que es la] propiedad de la sustancia que, sin que cambie su composición química, puede cristalizar en varios sistemas diferentes.

Save record 1

Record 2 2008-09-09

English

Subject field(s)
  • Mineralogy
DEF

A mineral whose outward crystal form is that of another mineral species; it has developed by alteration, substitution, incrustation, or paramorphism.

CONT

The most compelling evidence of replacement is pseudomorphism. Pseudomorphs of cassiterite after orthoclase have been recorded from Cornwall, England, and of pyrrhotite after hornblende from Sullivan, British Columbia.

OBS

A pseudomorph is said to be "pseudomorphic after" the other, from which it was formed.

OBS

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

French

Domaine(s)
  • Minéralogie
DEF

Minéral qui a pris une forme cristalline propre à un autre minéral.

CONT

[...] les textures sédimentaires du minerai stratifié seraient des pseudomorphes de celles présentes dans des lithologies préexistantes et auraient été produites par un remplacement sélectif des sédiments hôtes au cours d'un métasomatisme hydrothermal qui se serait produit juste au-dessous du fond marin.

OBS

[Par exemple,] [...] le quartz pseudomorphosant la fluorine.

Spanish

Save record 2

Record 3 2002-03-28

English

Subject field(s)
  • Toponymy
  • Language (General)
DEF

Each of two or more differing phonological manifestations of a given morpheme.

French

Domaine(s)
  • Toponymie
  • Linguistique (Généralités)
DEF

En toponymie se dit de chacune des deux ou nombreuses formes d'origine commune que peut prendre un nom de lieu.

OBS

Ex: Shippagan, Shippegan, Shipagan et Shipigan (Canada); Charolais, Charollais (France).

Spanish

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Record 4 1992-01-29

English

Subject field(s)
  • Diachronic Linguistics and Etymology
DEF

A variant of a morpheme which occurs in certain definable environments.

CONT

When we attend to the pronunciation of forms, or represent them consistently in a phonemic transcription, we find a similar relation between the morpheme and its variant representations in allomorphes, as we found in considering phonemes and their allophones.

French

Domaine(s)
  • Linguistique diachronique et étymologie
DEF

Se dit de différentes formes qui représentent le même morphème réalisé dans des contextes différents.

CONT

Lorsque l'on donne le nom de morphème à l'unité significative minimale, on appelle allomorphes les variantes de ce morphème en fonction du contexte.

Spanish

Save record 4

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