tetrahedron
/ˌtɛtɹəˈhiːdɹən/
tetrahedron noun: a polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids.

Noun
tetrahedron (plural tetrahedra or tetrahedrons)
- A polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids.
tetrahedron meaning in Hindi, Tamil, Tagalog and Indonesian
tetrahedron in Hindi
- polyhedron
- चतुष्फलक catuṣphalak
tetrahedron in Tamil
- நான்முகத்திண்மம், நான்முகி, நான்முகம்
tetrahedron in Tagalog
- polyhedron
- patdayag
tetrahedron in Indonesian
- polyhedron
- tetrahedron
More languagesFewer languages
- tetrahedron in Persian
- چهاروجهی
- tetrahedron in Vietnamese
- tứ diện
Examples of tetrahedron in a sentence
- A triangle becomes a tetrahedron (a type of pyramid), then a pentachoron (a hyperpyramid).
- Geometrically, K₃ relates to a triangle, K₄ a tetrahedron, K₅ a pentachoron, etc.
- Caltrops, tetrahedrons, and similar devices are designed to puncture vehicle tires or limit foot traffic.
Forms of tetrahedron
| plural | tetrahedra |
|---|---|
| plural | tetrahedrons |
| alternative form (obsolete) | tetraedrum |
Origin of tetrahedron
From Ancient Greek τετράεδρον (tetráedron, “triangle-based pyramid”), from τετράεδρος (tetráedros), from τετράς (tetrás, “four”) + ἕδρα (hédra, “seat”). By surface analysis, tetra- + -hedron.
Words formed from tetrahedron
Phrases with tetrahedron
Words that rhyme with tetrahedron
Questions about tetrahedron
- What does tetrahedron mean?
- Tetrahedron means a polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids.
- What is tetrahedron in Hindi?
- Tetrahedron in Hindi is चतुष्फलक (catuṣphalak). See Tetrahedron meaning in Hindi.
- What part of speech is tetrahedron?
- Tetrahedron is a noun.
- How do you pronounce tetrahedron?
- Tetrahedron is pronounced /ˌtɛtɹəˈhiːdɹən/.
- What is the plural of tetrahedron?
- The plural of tetrahedron is tetrahedra.
Words near tetrahedron in the dictionary
Source and license
Adapted from Wiktionary: tetrahedron (page history and authors); tetrahedron (Tamil Wiktionary) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vininn126-tetrahedron.wav, LL-Q1860 (eng)-Rho9998-tetrahedron.wav.
Cite this entry: “tetrahedron.” Word.ws, https://word.ws/tetrahedron. Based on Wiktionary, CC BY-SA 4.0.
