dodecahedron
/ˌdəʊ.dɛk.əˈhiː.dɹən/
"dodecahedron" is a 12-letter English headword indexed on PlainSpell.
The verdict
“dodecahedron” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A polyhedron with twelve faces; the regular dodecahedron has regular pentagons as faces and is one of the Platonic solids.
| Property | Value |
|---|---|
| Headword | dodecahedron |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌdəʊ.dɛk.əˈhiː.dɹən/ |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “dodecahedron” sits in English frequency
Spelling & Dictionary Insight
The English entry for dodecahedron is 12 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˌdəʊ.dɛk.əˈhiː.dɹən/. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "A polyhedron with twelve faces; the regular dodecahedron has regular pentagons as faces and is one of the Platonic solids.".
The misspelling generator found no plausible variants for dodecahedron, since its letter sequence doesn't invite the usual edit-distance slips. No close-neighbour confusable shows up for this headword in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: From Ancient Greek δωδεκάεδρον (dōdekáedron). Equivalent to dodeca- + -hedron. The correct English form is dodecahedron, spelled D-O-D-E-C-A-H-E-D-R-O-N.
Definition
- 1A polyhedron with twelve faces; the regular dodecahedron has regular pentagons as faces and is one of the Platonic solids.
Etymology
From Ancient Greek δωδεκάεδρον (dōdekáedron). Equivalent to dodeca- + -hedron.
This word in other languages
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
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Using “dodecahedron”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-O-D-E-C-A-H-E-D-R-O-N - every other letter order is a misspelling in standard orthography.
- Say it as /ˌdəʊ.dɛk.əˈhiː.dɹən/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.