Definition of melanchyme in English:

melanchyme

Pronunciation /ˈmɛlənkʌɪm/

noun

(also melanchym)
rare Mineralogy
  • A bituminous material, partly soluble in alcohol, found in some deposits of brown coal in Bohemia.

Origin

Mid 19th century; earliest use found in James Dana (1813–1895), geologist, zoologist, and teacher. From German Melanchym from ancient Greek μελαν- + χυμός juice.