curvilinear
"curvilinear" is a 11-letter English headword indexed on PlainSpell.
The verdict
“curvilinear” is uncommon English (frequency #67,343 among 43,570 “C” headwords), classed as an adjective. The kind of spelling people second-guess.
- #67,343
- frequency rank, English
- 43,570
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Having bends; curved; curvilineal.
| Property | Value |
|---|---|
| Headword | curvilinear |
| Language | English |
| Part of speech | Adjective |
| Letters | 11 |
| Frequency rank | #67,343 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “curvilinear” sits in English frequency
Rare enough to double-check
curvilinear is uncommon English at frequency #67,343 among 43,570 “C” headwords, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.
Our edit-distance generator produced no likely misspellings for curvilinear, typically a sign the spelling maps closely to how the word sounds. We don't track a confusable pairing for this entry, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From curve + -i- + linear, compare curve, linear. The correct English form is curvilinear, spelled C-U-R-V-I-L-I-N-E-A-R.
Definition
- 1Having bends; curved; curvilineal.
- 2Formed by curved lines.
Etymology
From curve + -i- + linear, compare curve, linear.
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 “curvilinear”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-U-R-V-I-L-I-N-E-A-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.