/ Dictionary / Index R retentivity: Meaning and Definition of Find definitions for: re•ten•tiv•i•ty Pronunciation: (rē"ten-tiv'i-tē), [key] — n. the power to retain; retentiveness. remanence. the ability to retain magnetization after the removal of the magnetizing force. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: retentivity (Thesaurus) retentive retepore 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