melanchyme
/ˈmɛlənkʌɪm/(also melanchym) Mineralogy rare
noun
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.