monochord
n. ஒற்றைத தந்தி இசைக்கருவி வகை.
Mon"o*chord, n. Etym: [L. monochordon, Gr. monocorde. See Chord, and cf. Mainchord.] (Mus.) Defn: An instrument for experimenting upon the mathematical relations of musical sounds. It consists of a single string stretched between two bridges, one or both of which are movable, and which stand upon a graduated rule for the purpose of readily changing and measuring the length of the part of the string between them.