IPA: /ˌmʌltɪˈnoʊmiəl/
KK: /mʌltɪˈnoʊmiəl/
A mathematical expression made up of multiple terms added together, where each term can include variables raised to different powers.
In algebra, a multinomial can represent complex relationships between variables.
Multinomial → It is formed from "multi-" (meaning many) and "nomen" (from Latin, meaning name). The word "multinomial" refers to an expression that consists of many names or terms, particularly in mathematics.
Think of 'many' ('multi-') names ('nomen') coming together in an expression — that's what multinomial means.