Definition of morvenite in US English:

morvenite

noun

Mineralogy
  • A variety of harmotome characterized by doubly twinned crystals.

Origin

Mid 19th century; earliest use found in Thomas Thomson. From Morven, the name of a district in western Scotland where this mineral was found + -ite.

Pronunciation

morvenite

/ˈmɔːvənʌɪt/