operation code is a noun meaning "the portion of a set of operation descriptions that specifies the operation to be performed; the set of operations in a computer". It carries one recorded sense.
the portion of a set of operation descriptions that specifies the operation to be performed; the set of operations in a computer
Definitions, synonyms and semantic relations for operation code come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.