English word procaine comes from English pro-, English -caine

Detailed word origin of procaine

Dictionary entry	Language	Definition
pro-	English (eng)	Agreeing with; supporting; favouring. Substituting for Earlier; prior. In front of. Rudimentary.
-caine	English (eng)	(organic chemistry, pharmacology) A synthetic alkaloid used as an anesthetic.
procaine	English (eng)	(pharmaceutical drug) A drug used as a local anaesthetic.

Words with the same origin as procaine