Opponency Definition

əpōnənsē

noun

Opposition; resistance.

Webster's New World

(UK) The act of opening an academic disputation; the proposition of objections to a tenet, as an exercise for a degree.

Wiktionary

Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.

Wiktionary