Definition of optimacy in English:

optimacy

noun

rare
  • 1Government, or a government, by the nobles or upper classes; = "aristocracy"; a state with this form of government. Now rare.

  • 2The best or highest state or condition; optimality. rare.

Origin

Late 16th century (in an earlier sense). From post-classical Latin optimatia government by the nobles or upper classes from classical Latin optimāt-, optimās + -ia; compare -acy.

Pronunciation

optimacy

/ˈɒptɪməsi/