monochord: Meaning and Definition of

mon•o•chord

Pronunciation: (mon'u-kôrd"), [key]
— n.
  1. an acoustical instrument dating from antiquity, consisting of an oblong wooden sounding box, usually with a single string, used for the mathematical determination of musical intervals.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.