Where does “antiarrhythmia” come from?

antiarrhythmia (English) comes from English arrhythmia, from New Latin arrhythmia, from Ancient Greek ἄρρυθμος, from Ancient Greek ῥυθμός, from Ancient Greek ῥέω, from Proto-Indo-European srew-, from Proto-Indo-European ser- — to flow; to guard; to bind, to tie together.

Ancestry of “antiarrhythmia”, step by step

antiarrhythmia traces back through two separate lines of ancestry.

via English arrhythmia

StepLanguageWordMeaning
1EnglisharrhythmiaAn irregular heartbeat; A disease entity...
2New Latinarrhythmiaarrhythmia
3Ancient GreekἄρρυθμοςHaving no rhythm; rhythmless, arhythmic; Having...
4Ancient Greekῥυθμόςa repeating, regular motion, vibration; measured...
5Ancient GreekῥέωI flow, stream, run, gush; I let flow, pour; I...
6Proto-Indo-Europeansrew-to flow, stream
7Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together

via English anti

StepLanguageWordMeaning
1EnglishantiOpposed to something; That has a torsion angle...
2Englishanti-Against, hostile to; Contrasting with the norm;...
3Ancient Greekἀντι-anti-, against; like, reminiscent of
4Ancient Greekᾰ̓ντῐ́opposite
Every word from Proto-Indo-European ser-Every word from Proto-Indo-European srew-Every word from Ancient Greek ῥέω