IPA: /ʌnˈpraɪmd/
KK: /ʌnˈpraɪmd/
Not prepared or made ready for use or action.
The unprimed canvas was waiting for the artist to start painting.
Unprimed → It is formed from "un-" (meaning not) and "primed" (from the Latin "primare", meaning to prepare or make ready). The word "unprimed" means not prepared or not made ready for use.
Think of 'not' ('un-') being added to 'prepared' ('primed') — that's why unprimed means something that is not ready.