Word.ws English Dictionary

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.

tetrahedron: a polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral...
Image: Variated by -- Peter Steinberg, CC BY-SA 3.0, via Wikimedia Commons

Noun

tetrahedron (plural tetrahedra or tetrahedrons)

  1. 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.

All 10 example sentences with tetrahedron

Forms of tetrahedron

pluraltetrahedra
pluraltetrahedrons
alternative form (obsolete)tetraedrum

Plural of tetrahedron: tetrahedra or tetrahedrons

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

  1. tetrahedrically
  2. tetrahedrite
  3. tetrahedrites
  4. tetrahedrization
  5. tetrahedrizations
  6. tetrahedron
  7. tetrahedrons
  8. tetrahelical
  9. tetrahelices
  10. tetrahelix
  11. tetrahelixes

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.