three-dimensional

adj

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

"three-dimensional" is a 16-letter English headword indexed on PlainSpell.

The verdict

“three-dimensional” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
17
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Existing in three dimensions.

Key facts for three-dimensional
PropertyValue
Headwordthree-dimensional
LanguageEnglish
Part of speechAdjective
Letters17
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “three-dimensional” sits in English frequency

three-dimensional falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

three-dimensional is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. 3 senses are on record.

Our edit-distance generator produced no likely misspellings for three-dimensional, since its letter sequence doesn't invite the usual edit-distance slips. Our dataset records no confusable match here, since nothing in our dataset looks or sounds close enough to cause mix-ups.

No borrowing history is documented for this entry, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is three-dimensional, spelled T-H-R-E-E---D-I-M-E-N-S-I-O-N-A-L.

Definition

  1. 1
    Existing in three dimensions.
  2. 2
    Having depth, or the illusion of depth, as well as height and width.
  3. 3
    Lifelike.

Synonyms

3D3-D3dtri-Dtridimensional

This word in other languages

tridimensional(Español)tridimensionnel(Français)dreidimensional(Deutsch)tridimensional(Português)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "three-dimensional"?
"three-dimensional" is spelled T-H-R-E-E---D-I-M-E-N-S-I-O-N-A-L.
What does "three-dimensional" mean?
As an adjective, "three-dimensional" means: Existing in three dimensions.
What language does "three-dimensional" come from?
"three-dimensional" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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.

Using “three-dimensional”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is T-H-R-E-E---D-I-M-E-N-S-I-O-N-A-L - every other letter order is a misspelling in standard orthography.
  • 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.

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

Source: FrequencyWords open word-frequency list