Word.ws English Dictionary

octadecahedron

octadecahedron noun: a polyhedron with eighteen faces.

Noun

octadecahedron (plural octadecahedra or octadecahedrons)

  1. A polyhedron with eighteen faces.
    • The cell structure was considered to consist of spherical holes but for the purposes of calculation, the cells were assumed to be octadecahedra. ln this model, a compressive force along the principal axis of the octadecahedron and parallel to.1974, International Polymer Science and Technology, page 202
    • In fact the structure of 2 can be related to the octadecahedron and the pentacapped trigonal prism in an interesting fashion1986, Dick Alan Nagaki, page 20

Synonyms of octadecahedron

Forms of octadecahedron

pluraloctadecahedra
pluraloctadecahedrons

Origin of octadecahedron

From octadeca- + -hedron.

Questions about octadecahedron

What does octadecahedron mean?
Octadecahedron means a polyhedron with eighteen faces.
What part of speech is octadecahedron?
Octadecahedron is a noun.
What is the plural of octadecahedron?
The plural of octadecahedron is octadecahedra.

Words near octadecahedron in the dictionary

  1. octadecafluorooctane
  2. octadecagon
  3. octadecagons
  4. octadecahedra
  5. octadecahedral
  6. octadecahedron
  7. octadecahedrons
  8. octadecahydrate
  9. octadecahydrates
  10. octadecamer
  11. octadecameric

Source and license

Adapted from Wiktionary: octadecahedron (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.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-octadecahedron.wav.

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