Definition of monazite in English English dictionary
any of a range of reddish-brown minerals that are mixed phosphates of the lighter rare earth elements lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium and yttrium
a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
{i} (Geology) type of brown mineral (contains phosphate, cerium, lanthanum, and thorium)
A mineral occurring usually in small isolated crystals, a phosphate of the cerium metals