Definition of melonite in US English:

melonite

noun

Mineralogy
  • Nickel telluride, NiTe₂, an opaque reddish-white mineral which crystallizes in the trigonal system and occurs as hexagonal scales.

Origin

Mid 19th century; earliest use found in Proceedings of the Academy of Natural Sciences of Philadelphia. From melon- (in the name of the Melonese mine, Calaveras County, California, where the first specimen of the mineral to be identified was found) + -ite.

Pronunciation

melonite

/ˈmɛlənʌɪt/