/ Dictionary / Index C chrono: Meaning and Definition of Find definitions for: chron•o Pronunciation: (kron'ō), [key] — pl. chron•os. chronometer. chrono- Pronunciation: [key] a combining form meaning “time,” used in the formation of compound words: chronometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chronic obstructive pulmonary disease chronobiology Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language