Definition of polymignite in English:

polymignite

noun

Mineralogy
rare
  • A mineral occurring as prismatic black crystals that is a metamict oxide of calcium, zirconium, and several other metals and has been regarded as a variety of zirconolite.

Origin

Early 19th century; earliest use found in Annals of Philosophy. From Swedish polymignit from poly- + ancient Greek μιγνύναι to mix + Swedish -it.

Pronunciation

polymignite

/ˌpɒlɪˈmɪɡnʌɪt/