D defs.my
Entry 2 senses Webster, 1913

Reciprocity

/(rĕs`ĭ*prŏs"ĭ*ty̆)/ · Rec·i·proc·i·ty · IPA /ˌrɛsəˈprɑsəti/
01 n. Mutual action and reaction.
  1. 1.
    Mutual action and reaction.
  2. 2.
    Reciprocal advantages, obligations, or rights; reciprocation.
Phrases & compounds
Reciprocity treaty — a treaty concluded between two countries, conferring equal privileges as regards customs or charges on imports, or in other respects.