IPA: /ɪnˈvɪsɪd/
KK: /ɪnˈvɪsɪd/
Describing a fluid that does not have any resistance to flow, meaning it can move without any internal friction.
In fluid dynamics, we often study inviscid flows to simplify the analysis of fluid motion.
Inviscid → It is formed from "in-" (meaning not) and "viscid" (from Latin "viscidus", meaning sticky or adhesive). The word "inviscid" means not sticky or having no viscosity.
Think of 'not' ('in-') being combined with 'sticky' ('viscid') to remember that 'inviscid' refers to something that is not sticky.