opcode
nounUK /ˈɒp.kəʊd/
US /ˈɑːp.koʊd/
A short code that tells a computer what action to do.
The program reads each opcode and then performs the matching instruction.
RELATED WORDS
OTHER MEANINGS
2. A numeric value in a bytecode format that selects a virtual machine operation.
The Java virtual machine fetched the next opcode from the class file.
3. A field within a machine instruction that specifies the operation to be performed.
The opcode field occupies the first six bits of the instruction word.
4. A code used in a protocol message to indicate the type of request or response.
The client sent an opcode of 8 to start the closing handshake.