WordReference Random House Learner's Dictionary of American English © 2025
ar•rhyth•mi•a /əˈrɪðmiə, eɪˈrɪð-/USA pronunciation
n. [uncountable]
WordReference Random House Unabridged Dictionary of American English © 2025- Pathologya disturbance in the rhythm of the heartbeat.
ar•rhyth•mi•a
(ə riᵺ′mē ə, ā riᵺ′-),USA pronunciation n. [Pathol.]
arrhyth•mic
(ə riᵺ′mik, ā riᵺ′-),USA pronunciation ar•rhyth′mi•cal, adj.
ar•rhyth′mi•cal•ly, adv.
- Pathologyany disturbance in the rhythm of the heartbeat.
- Greek arrhythmía. See a-6, rhythm, -ia
- Neo-Latin
- 1885–90;