/ Dictionary / Index C center of symmetry: Meaning and Definition of Find definitions for: cen'ter of sym'metry Pronunciation: [key] — Crystall. Crystall. a point within a crystal through which any straight line extends to points on opposite surfaces of the crystal at equal distances. Also calledCf. symmetry element. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. center of percussion centerpiece Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language