/ Dictionary / Index P prehension: Meaning and Definition of Find definitions for: pre•hen•sion Pronunciation: (pri-hen'shun), [key] — n. the act of seizing or grasping. mental apprehension. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: prehension (Thesaurus) prehensile prehistoric Related Content Daily Word Quiz: ephemeral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language