point group
noun Crystallography.
a class of crystals determined by a combination of their symmetry elements, all crystals left unchanged by a given set of symmetry elements being placed in the same class.
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Moot Point vs. Mute PointYou may have heard coworkers or acquaintances refer to an inconsequential or irrelevant point as a moot point, or maybe you’ve heard mute point instead. Fans of the TV show Friends may have heard a third variation: moo point (because, according to Joey, a cow’s opinion doesn’t matter). But which expression is correct, and what exactly does it mean? The correct phrase is moot point. …
Nearby words
point defect, point duty, point epidemic, point estimate, point estimation, point group, point guard, point in time, point lace, point man, point mutation
Origin of point group
First recorded in 1900–05
Also called symmetry class.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for point group
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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