'Echometer' definitions:

Definition of 'Echometer'

From: GCIDE

Echometer \E*chom"e*ter\, n. [Gr. ?, ?, sound + -meter: cf. F. ['e]chom[`e]tre.] (Mus) A graduated scale for measuring the duration of sounds, and determining their different, and the relation of their intervals. --J. J. Rousseau. [1913 Webster]