polyhedron

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UK/ˌpɒlɪˈhiːdɹən/UK/ˌpɒliːˈhiːdɹən/UK/ˌpɒliːˈhiːdɹɒn/UK, dated/ˌpɒlɪˈhɛdɹən/

noun

A solid figure with many flat faces and straight edges.

UncommonScrabble 19

Meanings

nounpolyhedron (plural polyhedra or polyhedrons)

plural polyhedra · plural polyhedrons · alternative polyedron

  1. geometryA solid figure with many flat faces and straight edges.

    Of the convex polyhedra with regular faces, the only ones that have tetrahedral, octahedral, or icosahedral symmetry are the Platonic and Archimedean solids.

    1966, Norman W. Johnson, “Convex Polyhedra with Regular Faces”, in Canadian Journal of Mathematics, volume XVIII, number I, Toronto: University of Toronto Press, page 181
  2. engineeringA polyscope, or multiplying glass.
  3. biologyA 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.

Synonyms & antonyms

Origin

  1. Ancient Greekπολύεδρος“having many seats”
  2. New Latinpolyedron
  3. Englishpolyhedron

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.

Full word history & related roots →

Translations

Bulgarian полиедър, многостен
  • полиедър (poliedăr)geometry: solid figure
  • многостен (mnogosten)geometry: solid figure
Catalan poliedre, políedre
  • poliedregeometry: solid figure
  • políedregeometry: solid figure
Chinese Mandarin 多面體 /多面体
  • 多面體 /多面体 (duōmiàntǐ)geometry: solid figure
Czech mnohostěn
  • mnohostěngeometry: solid figure
Danish polyeder
  • polyedergeometry: solid figure
Dutch veelvlak, polyeder
  • veelvlakgeometry: solid figure
  • polyedergeometry: solid figure
Esperanto pluredro
  • pluredrogeometry: solid figure
Finnish monitahokas, polyedri
  • monitahokasgeometry: solid figure
  • polyedrigeometry: solid figure
  • tahokasgeometry: solid figure
French polyèdre
  • polyèdregeometry: solid figure
German Polyeder, Vielflach
  • Polyedergeometry: solid figure
  • Vielflachgeometry: solid figure
  • Vielflächnergeometry: solid figure
Greek πολύεδρον
  • πολύεδρον (polýedron)geometry: solid figure
Hindi बहुफलक
  • बहुफलक (bahuphalak)geometry: solid figure
Hungarian poliéder
  • poliédergeometry: solid figure
Icelandic margflötungur
  • margflötungurgeometry: solid figure
Italian poliedro
  • poliedrogeometry: solid figure
Japanese 多面体
  • 多面体 (tamentai)geometry: solid figure
Korean 다면체
  • 다면체 (damyeonche)geometry: solid figure
Latvian daudzstūris
  • daudzstūrisgeometry: solid figure
Māori matarau
  • mataraugeometry: solid figure
Norwegian Bokmål polyeder
  • polyedergeometry: solid figure
Polish wielościan
  • wielościangeometry: solid figure
Portuguese poliedro
  • poliedrogeometry: solid figure
Romanian poliedru, poliedre
  • poliedrugeometry: solid figure
  • poliedregeometry: solid figure
Russian многогра́нник, полиэ́др
  • многогра́нник (mnogogránnik)geometry: solid figure
  • полиэ́др (poliédr)geometry: solid figure
Slovak mnohosten
  • mnohostengeometry: solid figure
Spanish poliedro
  • poliedrogeometry: solid figure
Swedish polyeder
  • polyedergeometry: solid figure
Tagalog damdayag
  • damdayaggeometry: solid figure
Ukrainian багатогра́нник, многогра́нник
  • багатогра́нник (bahatohránnyk)geometry: solid figure
  • многогра́нник (mnohohránnyk)geometry: solid figure
Vietnamese đa diện
  • đa diệngeometry: solid figure

Rhymes & wordplay

Rhymes with polyhedron

All rhymes →
Cite this entry
APA

polyhedron. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/polyhedron

MLA

“polyhedron.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/polyhedron. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “polyhedron,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/polyhedron.

Source: polyhedron on Wiktionary, CC BY-SA 4.0.