/ Dictionary / Index F flow cleavage: Meaning and Definition of Find definitions for: flow' cleav"age Pronunciation: [key] — Petrol. Petrol. cleavage resulting from the parallel alignment of the mineral constituents of a rock when in a plastic condition. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flow chart flower Related Content Daily Word Quiz: censure Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language