processor

(noun) a business engaged in processing agricultural products and preparing them for market.

(noun) someone who processes things (foods or photographs or applicants etc.).

(noun) (computer science) the part of a computer (a microprocessor chip) that does most of the data processing. Synonyms: central processing unit, CPU, C.P.U., central processor, mainframe. Example: "The cpu and the memory form the central part of a computer to which the peripherals are attached."