/ Dictionary / Index P plexor: Meaning and Definition of Find definitions for: plex•or Pronunciation: (plek'sur), [key] — n. a small hammer with a soft rubber head or the like, used in percussion for diagnostic purposes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: plexor (Thesaurus) pleximeter plexus Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language