/ Dictionary / Index S snow crystal: Meaning and Definition of Find definitions for: snow' crys"tal Pronunciation: [key] a crystal of ice sufficiently heavy to fall from the atmosphere. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. snow crust snow day Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language