planar
/ˈpleɪnɚ/
"planar" is a 6-letter English headword indexed on PlainSpell.
The verdict
“planar” is a moderately-common English word, ranked #26,553 in English word frequency and used as an adjective.
- #26,553
- frequency rank, English
- 6
- letters
- 9
- tracked misspellings
- 19
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Of or pertaining to a plane.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | planar |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˈpleɪnɚ/ |
| Letters | 6 |
| Frequency rank | #26,553 |
| Misspellings tracked | 9 |
| Confusable pairs | 19 |
| Source | Wiktionary (kaikki.org) |
Where “planar” sits in English frequency
Spelling & Dictionary Insight
The English entry for planar is 6 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˈpleɪnɚ/. Corpus data places it at rank #26,553 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 9 likely wrong-spelling variants for planar, with forms such as "lpanar", "palnar", and "plaanr". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 19 confusable-pair relationships, "plans", "plant", "plane", and more, where similar look or sound leads writers to substitute one word for another in context.
Etymologically, the entry records: From Late Latin plānārius (“relating to a plane”), derived from Latin plānus (“flat”, “level”), equivalent to plane + -ar, ultimately from Proto-Indo-European *pleh₂- (“flat”). The correct English form is planar, spelled P-L-A-N-A-R.
Definition
- 1Of or pertaining to a plane.
- 2Flat, two-dimensional.
- 3Able to be embedded in the plane with no edges intersecting.
- 4Having a flat profile, not etched into a mesa.
Etymology
From Late Latin plānārius (“relating to a plane”), derived from Latin plānus (“flat”, “level”), equivalent to plane + -ar, ultimately from Proto-Indo-European *pleh₂- (“flat”).
This word in other languages
Common misspellings
Also misspelled as: lpanar,palnar,plaanr,planarr,plannar,planra,pllanar,plnaar,pplanar
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of planar - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.
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 “planar”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-L-A-N-A-R - every other letter order is a misspelling in standard orthography.
- Say it as /ˈpleɪnɚ/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “plans” - see the side-by-side comparison. planar vs plans
- Browse more English words and confusable pairs in the same reference. English words
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.