IPA: //ˌmʌltiˈkærɪktər//
KK: /mʌltiˈkærɪktər/
Made up of more than one character or symbol, often used in the context of text or writing.
The password must be multicharacter to ensure better security.
Multicharacter → It is formed from "multi-" (meaning many) and "character" (from Greek "charaktēr", meaning a distinctive mark or symbol). The word "multicharacter" refers to something that consists of many characters or symbols.
Think of 'multi-' meaning many, and 'character' as a distinctive mark or symbol — so multicharacter means having many symbols or marks.