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Definition of rumanite in US English:

rumanite

(also rumänite, roumanite, romanite)

noun

Mineralogy

  • A variety of amber found in Romania and containing sulphur and succinic acid.

Origin

Late 19th century; earliest use found in Edward Dana (1849–1935), mineralogist and physicist. From the name of Rumania + -ite, after German Rumänit.