IPA: //ʌnˈprɒsɛst//
KK: /ʌnˈprɑːsɛst/
Not changed or altered in any way; in its natural state without any treatment or processing.
I prefer to eat unprocessed foods for a healthier diet.
Unprocessed → It is formed from "un-" (meaning not) and "processed" (from Latin "processus", meaning a series of actions or steps taken to achieve a particular end). The word "unprocessed" means not having undergone any processing or alteration.
Think of 'not' ('un-') having gone through a series of actions ('processed') — that's why unprocessed means something that hasn't been changed or altered.