[uh-rith
-mee-uh, ey-rith-] 
| any disturbance in the rhythm of the heartbeat. |
[uh-rith-mik, ey-rith-] , ar⋅rhyth⋅mi⋅cal, adjective | ar·rhyth·mi·a (ə-rĭth'mē-ə) n. An irregularity in the force or rhythm of the heartbeat. [New Latin, from Greek arruthmiā, lack of rhythm, from arruthmos, unrhythmical : a-, without; see a-1 + rhuthmos, rhythm; see rhythm.] |
arrhythmia ar·rhyth·mi·a (ə-rĭ&phonth;'mē-ə)
n.
An irregularity in the force or rhythm of the heartbeat.