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