IPA: /ˈkoʊpeɪ/
KK: /ˈkoʊpeɪ/
A fixed amount that a patient pays for a specific medical service or prescription, usually as part of their health insurance plan.
When I visited the doctor, I had to pay a copay of $20 for the consultation.
Copay → The word is formed from "co-" (meaning together) and "pay" (from Old French *paier*, meaning to pay). It refers to a payment made together with another party, typically in a healthcare context where the insured pays a portion of the costs alongside the insurer.
Think of 'together' ('co-') when you make a 'payment' ('pay') — that's what copay means, a payment made together.