/ Dictionary / Index C crenation: Meaning and Definition of Find definitions for: cre•na•tion Pronunciation: (kri-nā'shun), [key] — n. a rounded projection or tooth, as on the margin of a leaf. (in erythrocytes) the state of being or becoming shrunken with a notched or indented edge. a notch between teeth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: crenation (Thesaurus) crenate crenature Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language