Definition of mesonomic in US English:

mesonomic

adjective

Law
  • In A. Kocourek's terminology: designating a power, right, duty, etc., the free exercise of which, though not directly or positively constrained by legal prescription or proscription, may have effects or consequences which are constrained by law. Opposed to zygnomic.

Origin

1920s. From meso- + nomic, after zygnomic.

Pronunciation

mesonomic

/ˌmɛsə(ʊ)ˈnɒmɪk/