Complementarity

Definitions

1. The state or characteristic of being complementary.
   countable, uncountable
2. A semantic relationship between two words wherein negative use of one entails the affirmative of the other with no gradability; the relation of binary antonyms.
   countable, uncountable
3. The idea that physical phenomena may have (mutually contradictory) properties that cannot be observed simultaneously (e.g. wave-particle duality).
   countable, uncountable

Equivalents

Examples

“"Synergy is one of the most overused words in the English language, but there is a tremendous complementarity to these organizations."”

“For complementarity, there are entailments both from affirmative sentences to the corresponding negative sentences (which is what ordinary antonymy allows) and from negative sentences to the corresponding affirmative sentences. [...] That light⟳ is on entails That light⟳ is not off. That light⟳ is not on entails That light⟳ is off.”

CEFR level