† ecrhythmous|ɛˈkrɪθməs| [f.Gr. ἔκρυθµος out of tune, f. ἐκ out + ῥυθµός rhythm; see -ous.] [1715Kersey, Ecrhythmus, a Pulse that observes no Method.]1883Syd. Soc.Lex., Ecrhythmous, old term applied by Galen to the pulse, and meaning irregular or unrhythmical.