processorpro·ces·sor /ˈprəʊsesəˈprɑːsesər/ noun [countableC]1COMPUTING the central part of a computer that does the calculations on the information put into itan Intel Pentium III processor
systems that need a big expensive central processor to work
→ see also central processing unit, word processor 2a company that prepares substances, especially food, for sale or as part of another productGeorgia officials blocked sales by an Atlanta milk processor after detecting contamination in its milk.