'Synallagmatic' definitions:

Definition of 'Synallagmatic'

From: GCIDE

Synallagmatic \Syn`al*lag*mat"ic\, a. [Gr. ?, from ? a mutual agreement, contract, fr. ? to exchange, negotiate with; sy`n with + ? to change.] (Law) Imposing reciprocal obligations upon the parties; as, a synallagmatic contract. --Bouvier. [1913 Webster]