tetrahedra is tetrahedron's Plural Form

tetrahedron

US 
UK 
  • n.【几】四面体;【植】四分体形
  • Web四面体网格;硅氧四面体
Plural Form:tetrahedrons  Plural Form:tetrahedra  
n.
1.
【几】四面体
2.
【植】四分体形