Early 17th century; earliest use found in William Shakespeare (1564–1616), playwright and poet. From classical Latin operant-, operānsoperant: see -ance.
Definition of operance in US English:
operance
noun
rare
= operancy.
Origin
Early 17th century; earliest use found in William Shakespeare (1564–1616), playwright and poet. From classical Latin operant-, operāns operant: see -ance.