monochord noun. ['mɒnǝ(ʊ)kɔ:d] LME.
[Old & mod. French monocorde from late Latin monochordon from Greek monokhordon use as noun of monokhordos having a single string, formed as MONO- + khordē string: see CORD noun¹ & adjective. In sense 3 from MONO- + CHORD noun¹.]
1. A musical instrument consisting of a soundboard with a single string and often a movable bridge, orig. used esp. to teach the intervals of plainsong, now esp. for mathematical determination of musical intervals. LME.

2. Hist. A medieval musical instrument with several strings and bridges for the production of a combination of sounds. LME.

3. A harmonious combination of sound; fig. harmony, concord. Now rare. LME.

[TahlilGaran] English Dictionary ▲