/ Dictionary / Index S symmetry axis of rotary inversion: Meaning and Definition of Find definitions for: sym'metry ax"is of ro'tary inver'sion Pronunciation: [key] — Crystall. Crystall. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. symmetry symmetry axis of rotation Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language