/ Dictionary / Index P preportion: Meaning and Definition of Find definitions for: pre•por•tion Pronunciation: (prē-pôr'shun, pōr'-), [key] — v.t. to divide into portions before packaging, selling, etc.: to preportion meals for schools and hospitals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. preponderate prepose Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language