collinear

/kəˈlɪn.i.ɚ/

//kəˈlɪn.i.ɚ// adj

By · According to Wiktionary data (CC BY-SA) ·

"collinear" is a 9-letter English headword indexed on PlainSpell.

The verdict

“collinear” is uncommon English (frequency #99,117 among 5,599 “C” headwords), classed as an adjective. The kind of spelling people second-guess.

#99,117
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Lying on the same straight line.

Corpus desk

Index EN-collinear · collinear · English

collinear · rank #99,117 · 0 variants · 0 confusables

  • FREQ-RARE #99,117
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH Coggins

Nearest frequency peer: Coggins (-1 rank slots)

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.

Long-tail ranks near “collinear”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “collinear” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for collinear
PropertyValue
Headwordcollinear
LanguageEnglish
Part of speechAdjective
IPA/kəˈlɪn.i.ɚ/
Letters9
Frequency rank#99,117
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “collinear” in English

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).collinearfalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “Coggins” (#99,116), “coffered” (#99,115), “collisional” (#99,119). Among 5,599 “C” headwords, “collinear” is #99,117. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

collinear is uncommon English at frequency #99,117 among 5,599 “C” headwords, classed as anadjective, transcribed /kəˈlɪn.i.ɚ/. Rarity is why readers land here mid-draft. 2 senses are on record.

Zero misspellings are on record for collinear in our index, which points to an orthography that plays by predictable English rules. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From col- + linear. The correct English form is collinear, spelled C-O-L-L-I-N-E-A-R.

Definition

  1. 1
    Lying on the same straight line.
  2. 2
    Coaxial.

Etymology

From col- + linear.

This word in other languages

colinéaire(Français)

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

How do you spell "collinear"?
"collinear" is spelled C-O-L-L-I-N-E-A-R. The IPA pronunciation is /kəˈlɪn.i.ɚ/.
What does "collinear" mean?
As an adjective, "collinear" means: Lying on the same straight line.
How do you pronounce "collinear"?
The IPA (International Phonetic Alphabet) transcription for "collinear" is /kəˈlɪn.i.ɚ/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "collinear"?
From col- + linear. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "collinear", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

codeshare#99,113crabapple#99,132chinstrap#99,099crustacea#99,140

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list