/ Dictionary / Index P presenile: Meaning and Definition of Find definitions for: pre•se•nile Pronunciation: (prē-sē'nīl, -nil, -sen'īl), [key] — adj. pertaining to or exhibiting the characteristics of presenility; prematurely old. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. presence of mind presenility Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language