Definition of omphacite in US English:

omphacite

noun

Mineralogy
  • A green foliated pyroxene.

Origin

Early 19th century; earliest use found in Andrew Ure (1778–1857), chemist. From German Omphazit from ancient Greek ὄμϕαξ unripe grape + German -it.

Pronunciation

omphacite

/ˈɒmfəsʌɪt/