Definition of onofrite in US English:

onofrite

noun

Mineralogy
  • A sulphide and selenide of mercury occurring as lustrous black masses.

Origin

Mid 19th century; earliest use found in James Nicol (1810–1879), geologist. From German Onofrit from the name of San Onofre in Mexico, where it was first identified + -it.

Pronunciation

onofrite

/ˈɒnə(ʊ)frʌɪt/