Definition of minera in English:

minera

Pronunciation /mɪˈnɪərə/

noun

historical, rare Alchemy
  • The matrix in which a metal or precious stone was formerly believed to grow; the ore of a metal.

Origin

Mid 17th century. From post-classical Latin minera mineral, ore, variant (perhaps after forms in Old French or Anglo-Norman) of post-classical Latin minaria (also minarium, mineria) ore, mine from mina + -aria.