/ Dictionary / Index P point group: Meaning and Definition of Find definitions for: point' group" Pronunciation: [key] — Crystall. Crystall. 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. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. point estimation point guard Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language