Definition of malacolite in English:

malacolite

noun

Mineralogy
  • A mineral now usually regarded as identical with diopside.

Origin

Early 19th century; earliest use found in Arthur Aikin (1773–1854), natural scientist and author. From French malacolithe from malaco- + -lithe.

Pronunciation

malacolite

/ˈmaləkə(ʊ)lʌɪt/