1. Bounded by four equal and equilateral triangles; having four sides.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• decahederal,
• enhahedral,
• hexsahedral,
• -pentahedral,
• tetratohedral,
• retrahedral,
• fetrahedral,
• getrahedral,
• yetrahedral,
• 6etrahedral,
• 5etrahedral,
• twtrahedral,
• tstrahedral,
• tdtrahedral,
• trtrahedral,
• t4trahedral,
• tetrahederal,
• tetrahedreal,
• tetarhedral,
• tetrahderal

The adjective form of the word "tetrahedral" is "tetrahedral".

The plural form of the word "tetrahedral" is "tetrahedrals".

The singular form of the word "Tetrahedral" is "Tetrahedron"