IPA: /nɒnˈfluːɪd/
KK: /nɑnˈfluɪd/
A substance that does not flow like a liquid or gas.
The nonfluid material was difficult to pour into the mold.
Nonfluid → It is formed from "non-" (meaning not) and "fluid" (from Latin "fluidus", meaning flowing). The word "nonfluid" means not flowing or lacking fluidity.
Think of 'not' ('non-') and 'flowing' ('fluid') to remember that 'nonfluid' describes something that does not flow.