A musical instrument with ten strings.

= tetrachord, n.

= decachord, n. Also figurative.

An ancient musical instrument with four strings.

Any of various musical instruments with five strings. Now chiefly historical.

(a) A musical instrument of seven strings. (b) A series of seven notes, formed of two conjunct tetrachords. (c) The interval of a seventh.

Designating any of various types of one-stringed musical instrument.

An instrument having two strings. Also: an instrument with pairs of strings tuned to the same note (rare).

A musical instrument of three strings; a three-stringed lyre or lute.

A musical instrument having eight strings.

(a) Music a series or scale of eleven notes; (b) (in ancient Greece) a musical instrument having eleven strings.

= monochord, n. 1a.