trihedra

• plural

  plural

  The grammatical form denoting more than one person, place, thing, or idea.

  of trihedron.
  trihedron

  noun

  the figure determined by three planes meeting in a point.

More Suggestions

• trihedron
• trihydrate
• trihydric
• tetrahedral
• cathedra
• dihedral
• ephedra
• exhedra
• hemihedral