/ Dictionary / Index C cet-: Meaning and Definition of Find definitions for: cet- Pronunciation: [key] a combining form meaning “whale,” used in the formation of compound words: cetane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cesura CETA Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language