dimensionless

adj

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

"dimensionless" is a 13-letter English headword indexed on PlainSpell.

The verdict

“dimensionless” is uncommon English (frequency #65,053 among 3,470 “D” headwords), classed as an adjective. The kind of spelling people second-guess.

#65,053
frequency rank, English
3,470
“D” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Lacking dimensions.

Corpus desk

Index EN-dimensionless · dimensionless · English

dimensionless · rank #65,053 · 0 variants · 0 confusables

  • FREQ-RARE #65,053
  • LEN-MEGA 13 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 3,470
  • PHOTO-FINISH dignitary

Nearest frequency peer: dignitary (-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 “dimensionless”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for dimensionless
PropertyValue
Headworddimensionless
LanguageEnglish
Part of speechAdjective
Letters13
Frequency rank#65,053
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “dimensionless” in English

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).dimensionlessfalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “dignitary” (#65,052), “dinger” (#65,054), “dietetic” (#65,051). Among 3,470 “D” headwords, “dimensionless” is #65,053. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

dimensionless is uncommon English at frequency #65,053 among 3,470 “D” 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 dimensionless, since its letter pattern doesn't lend itself to common typo substitutions. 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 dimension + -less. The correct English form is dimensionless, spelled D-I-M-E-N-S-I-O-N-L-E-S-S.

Definition

  1. 1
    Lacking dimensions.
  2. 2
    Of a physical constant: lacking units.

Recorded use

Wiktionary examples

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

  1. To Heav'n thir prayers / Flew up, nor miſsd the way, by envious windes / Blow'n vagabond or fruſtrate: in they paſsd / Dimentionleſs through Heav'nly dores; […]
  2. Extended objects may be separated by dimensionless points; but dimensionless points cannot be separated, but by some real distance, or something really extended.

Etymology

From dimension + -less.

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 "dimensionless"?
"dimensionless" is spelled D-I-M-E-N-S-I-O-N-L-E-S-S.
What does "dimensionless" mean?
As an adjective, "dimensionless" means: Lacking dimensions.
What is the origin of the word "dimensionless"?
From dimension + -less. 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 "dimensionless", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 13 letters (nearest by frequency rank).

hemispherical#65,180hydrocephalus#65,191kaleidoscopic#65,226Kristallnacht#65,247

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

Source: FrequencyWords open word-frequency list