plural deltohedra
: a solid (such as a crystal) that is bounded by 12 quadrilateral faces and is a hemihedral form of the isometric system related to the tetrahedron

called also deltoid dodecahedron, tetragonal tristetrahedron

Word History


New Latin, from delto- + -hedron

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near deltohedron

Cite this Entry

“Deltohedron.” Dictionary, Merriam-Webster, Accessed 20 Jul. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!