Where does “antiarrhythmic” come from?

Antiarrhythmic derives from English anti- combined with arrhythmic, ultimately tracing through Ancient Greek ἀντί (against) and ἀντι- to Proto-Indo-European h₂énti and h₂ent- (opposite, facing).

antiarrhythmic (English): Used to treat or prevent arrhythmia; A drug that...

Definitions

Used to treat or prevent arrhythmia; A drug that...

Ancestry of “antiarrhythmic”, step by step

Step	Language	Word	Meaning
1	English	anti-	Against, hostile to; Contrasting with the norm;...
2	Ancient Greek	ἀντι-	anti-, against; like, reminiscent of
3	Ancient Greek	ᾰ̓ντῐ́	opposite

Every word from Ancient Greek ᾰ̓ντῐ́ →Every word from English anti- →Every word from Ancient Greek ἀντι- →