planar

/ˈpleɪnɚ/

//ˈpleɪnɚ// adj

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

"planar" is a 6-letter English headword indexed on PlainSpell.

The verdict

“planar” has 9 generated spelling variants in the English index at frequency #26,553. The variants make it a useful spelling check.

#26,553
frequency rank, English
4,417
“P” headwords
9
tracked misspellings
19
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Of or pertaining to a plane.

Corpus desk

Index EN-planar · planar · English

planar · rank #26,553 · 9 variants · 19 confusables

  • FREQ-MID #26,553
  • LEN-LONG 6 letters
  • VOW-2 2 vowels
  • CONFUS-HIGH 19 pairs
  • VAR-MID 9 variants
  • BOOK-MID 4,417
  • PHOTO-FINISH polluting

Nearest frequency peer: polluting (+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.

Rank peers near misspelling magnet “planar”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “planar” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

planar vs plans
67% similar
planar vs plant
67% similar
planar vs plane
67% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for planar
PropertyValue
Headwordplanar
LanguageEnglish
Part of speechAdjective
IPA/ˈpleɪnɚ/
Letters6
Frequency rank#26,553
Misspellings tracked9
Confusable pairs19
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “planar”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).planarlands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “polluting” (#26,554), “penchant” (#26,551), “polygamy” (#26,555). Among 4,417 “P” headwords, “planar” is #26,553. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 9 spelling variants around planar (IPA /ˈpleɪnɚ/), anadjective. Corpus frequency is #26,553 among 4,417 “P” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

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

  1. 1
    Of or pertaining to a plane.
  2. 2
    Flat, two-dimensional.
  3. 3
    Able to be embedded in the plane with no edges intersecting.
  4. 4
    Having a flat profile, not etched into a mesa.

Recorded use

Wiktionary examples

These source excerpts show how planar appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. A planar projection of a three-dimensional object is its projection onto a plane.
  2. A complete graph with more than four nodes is never planar.

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

plano(Español)planaire(Français)

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.

lpanar2palnar2plaanr2planarr1plannar1planra2pllanar1plnaar2
Edit distance from "planar"

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 "planar"?
"planar" is spelled P-L-A-N-A-R. The IPA pronunciation is /ˈpleɪnɚ/.
What does "planar" mean?
As an adjective, "planar" means: Of or pertaining to a plane.
What words are commonly confused with "planar"?
"planar" is commonly confused with "plans", "plant", "plane". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "planar"?
The IPA (International Phonetic Alphabet) transcription for "planar" is /ˈpleɪnɚ/. 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 "planar"?
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”). 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 "planar", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

pegged#26,548poplar#26,558quorum#26,566rarest#26,570

Similar misspelling depth

Headwords with a similar count of attested misspellings (9 here; floor ≥5).

rascal9 variantsO'Leary9 variantsroanoke9 variantsnimble9 variants

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

Source: FrequencyWords open word-frequency list