opcode
"opcode" is a 6-letter English headword indexed on PlainSpell.
The verdict
“opcode” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 6
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A mnemonic used to refer to a microprocessor instruction in assembly language.
Corpus desk
Index EN-opcode · opcode · English
opcode · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 6 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "O" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | opcode |
| Language | English |
| Part of speech | Noun |
| Letters | 6 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “opcode” in English
Rare enough to double-check
opcode is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A mnemonic used to refer to a microprocessor instruction in assembly language.".
The misspelling generator found no plausible variants for opcode, since its letter sequence doesn't invite the usual edit-distance slips. It is not paired with a close-neighbour confusable in our dataset, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From op + code (in sense of operation). The correct English form is opcode, spelled O-P-C-O-D-E.
Definition
- 1A mnemonic used to refer to a microprocessor instruction in assembly language.
Recorded use
Wiktionary examplesThese source excerpts show how opcode appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
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.
In the tradition of other low-level languages, many CIL opcodes tend to be cryptic and completely unpronounceable by us mere humans.
Etymology
From op + code (in sense of operation).
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.