/ Dictionary / Index C colinear: Meaning and Definition of Find definitions for: co•lin•e•ar Pronunciation: (ku-lin'ē-ur), [key] — adj. collinear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. colin coliphage 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