Definition of idocrase in English:

idocrase

noun

mass noun
  • A mineral consisting of a silicate of calcium, magnesium, and aluminium, occurring typically as dark-green to brown prisms in metamorphosed limestone.

    • ‘In fact idocrase is one stone that is sometimes mistaken for jade by jewelers and consumers alike.’
    • ‘In 1960 we had idocrase, whereas the change in nomenclature preference is reflected in the 1996 edition as vesuvianite (idocrase).’

Origin

Early 19th century: from Greek eidos ‘form’ + krasis ‘mixture’.

Pronunciation

idocrase

/ˈʌɪdə(ʊ)kreɪs//ˈʌɪdə(ʊ)kreɪz/