Opcode

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A mnemonic used to refer to a microprocessor instruction in assembly language.

    "When the microprocessor decodes the JSR opcode, it stores the operand into the TEMP register and pushes the current contents of the PC ($00 0128) onto the stack."

Example

More examples

"When the microprocessor decodes the JSR opcode, it stores the operand into the TEMP register and pushes the current contents of the PC ($00 0128) onto the stack."

Etymology

From op + code (in sense of operation).

Related phrases

assembly language

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.