polyhedron
/ˌpɒlɪˈhiːdɹən/
"polyhedron" is a 10-letter English headword indexed on PlainSpell.
The verdict
“polyhedron” is uncommon English (frequency #88,723 among 46,516 “P” headwords), classed as a noun. The kind of spelling people second-guess.
- #88,723
- frequency rank, English
- 46,516
- “P” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A solid figure with many flat faces and straight edges.
| Property | Value |
|---|---|
| Headword | polyhedron |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌpɒlɪˈhiːdɹən/ |
| Letters | 10 |
| Frequency rank | #88,723 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “polyhedron” sits in English frequency
Rare enough to double-check
polyhedron is uncommon English at frequency #88,723 among 46,516 “P” headwords, classed as anoun, transcribed /ˌpɒlɪˈhiːdɹən/. Rarity is why readers land here mid-draft. 3 senses are on record.
Our edit-distance generator produced no likely misspellings for polyhedron, a straightforward case of a spelling with little room for common typos. This entry stands alone in our confusable dataset, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From New Latin polyedron, from Ancient Greek πολύεδρος (polúedros, “having many seats”), from πολυ- (polu-, “many”) + ἕδρα (hédra, “seat”); compare French polyèdre. By surface analysis, poly- + -hedron. The correct English form is polyhedron, spelled P-O-L-Y-H-E-D-R-O-N.
Definition
- 1A solid figure with many flat faces and straight edges.
- 2A polyscope, or multiplying glass.
- 3A stage in the growth of Hydrodictyon, when the resting spore breaks up into several megazoospores that put out horn-like appendages; these polyhedra break up into zoospores.
Etymology
From New Latin polyedron, from Ancient Greek πολύεδρος (polúedros, “having many seats”), from πολυ- (polu-, “many”) + ἕδρα (hédra, “seat”); compare French polyèdre. By surface analysis, poly- + -hedron.
Synonyms
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); 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 “polyhedron”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-O-L-Y-H-E-D-R-O-N - every other letter order is a misspelling in standard orthography.
- Say it as /ˌpɒlɪˈhiːdɹən/ (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
Other uncommon English words near this rank
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.