trihedron [n.]
| sing. | trihedron | 
| plur. | trihedra / trihedrons | 
Outras palavras (mesmo modelo) :
philodendron octahedron millimicron enneahedron polyhedron hexahedron amnion Arthus phenomenon phenomenon mesoscopic phenomenon Wonderland phenomenon trapezohedron eidolon linguistic phenomenon properispomenon all-or-nothing phenomenon propylon Gasserian ganglion thalamencephalon hextetrahedron ... (56 words)