decahedron
Concise Oxford English Dictionary © 2008 Oxford University Press:
decahedron /ˌdɛkəˈhiːdr(ə)n, -ˈhɛd-/
▶noun (pl. decahedra or decahedrons) a solid figure with ten plane faces.
– derivatives
decahedral adjective.
decahedral adjective.
'decahedron' also found in these Oxford entries:

