1. a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent; [syn: zircon, zirconium silicate]
WordNet (r) 3.0 (2006):
zirconium silicate
n 1: a common mineral occurring in small crystals; chief source
of zirconium; used as a refractory when opaque and as a gem
when transparent [syn: zircon, zirconium silicate]