parallelepiped
/ˌpæɹəˌlɛləˈpaɪpɪd/
"parallelepiped" is a 14-letter English headword indexed on PlainSpell.
The verdict
“parallelepiped” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 14
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A solid figure, having six faces, all parallelograms, all opposite faces being similar and parallel.
| Property | Value |
|---|---|
| Headword | parallelepiped |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌpæɹəˌlɛləˈpaɪpɪd/ |
| Letters | 14 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “parallelepiped” sits in English frequency
Rare enough to double-check
parallelepiped is uncommon English outside the top frequency list, classed as anoun, transcribed /ˌpæɹəˌlɛləˈpaɪpɪd/. Rarity is why readers land here mid-draft. Gloss: "A solid figure, having six faces, all parallelograms, all opposite faces being similar and parallel.".
No misspelling variants are generated for parallelepiped in our index, a sign its spelling follows regular English conventions. No close-neighbour confusable shows up for this headword in our dataset, since no other headword is close enough in sound or shape to pair with it.
Etymologically, the entry records: From Latin parallēlepipedum, from Ancient Greek παραλληλεπίπεδος (parallēlepípedos, “with parallel surfaces”), from παράλληλος (parállēlos, “parallel”) + ἐπίπεδος (epípedos, “plane”). The correct English form is parallelepiped, spelled P-A-R-A-L-L-E-L-E-P-I-P-E-D.
Definition
- 1A solid figure, having six faces, all parallelograms, all opposite faces being similar and parallel.
Etymology
From Latin parallēlepipedum, from Ancient Greek παραλληλεπίπεδος (parallēlepípedos, “with parallel surfaces”), from παράλληλος (parállēlos, “parallel”) + ἐπίπεδος (epípedos, “plane”).
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 “parallelepiped”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-A-R-A-L-L-E-L-E-P-I-P-E-D - every other letter order is a misspelling in standard orthography.
- Say it as /ˌpæɹəˌlɛləˈpaɪpɪd/ (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.