coprocessor
"coprocessor" is a 11-letter English headword indexed on PlainSpell.
The verdict
“coprocessor” is uncommon English (frequency #89,256 among 43,570 “C” headwords), classed as a noun. The kind of spelling people second-guess.
- #89,256
- frequency rank, English
- 43,570
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An additional microprocessor used to supplement the functionality of the central processing unit, performing tasks such as floating-point arithmetic (floating-point unit) or graphics calculations (...
| Property | Value |
|---|---|
| Headword | coprocessor |
| Language | English |
| Part of speech | Noun |
| Letters | 11 |
| Frequency rank | #89,256 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “coprocessor” sits in English frequency
Rare enough to double-check
coprocessor is uncommon English at frequency #89,256 among 43,570 “C” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "An additional microprocessor used to supplement the functionality of the central processing unit, performing tasks such as floating-point arithmetic (floating-point unit) or graphics calculations (...".
No misspelling variants are generated for coprocessor in our index, suggesting the orthography follows predictable English patterns. Our confusable-pair dataset has no match for it, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From co- + processor. The correct English form is coprocessor, spelled C-O-P-R-O-C-E-S-S-O-R.
Definition
- 1An additional microprocessor used to supplement the functionality of the central processing unit, performing tasks such as floating-point arithmetic (floating-point unit) or graphics calculations (graphics processing unit).
Etymology
From co- + processor.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “coprocessor”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-O-P-R-O-C-E-S-S-O-R - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.