Deltahedron

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A polyhedron whose faces are all equilateral triangles.

    "There are infinitely many deltahedra, but only eight that are convex."

Example

More examples

"There are infinitely many deltahedra, but only eight that are convex."

Etymology

From delta (Greek letter) + -hedron referring to the triangular shape of the letter.

Related phrases

equilateral triangle

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.