'plexometer' definitions:

Definition of 'plexometer'

From: GCIDE

Pleximeter \Plex*im"e*ter\, n. [Gr. ? stroke, percussion (from ? to strike) + -meter.] (Med.) A small, hard, elastic plate, as of ivory, bone, or rubber, placed in contact with body to receive the blow, in examination by mediate percussion. [Written also plexometer.] [1913 Webster]