Source : Webster's Revised Unabridged Dictionary (1913)

Acquiescence \Ac`qui*es"cence\, n. [Cf. F. acquiescence.]
   1. A silent or passive assent or submission, or a submission
      with apparent content; -- distinguished from avowed
      consent on the one hand, and on the other, from opposition
      or open discontent; quiet satisfaction.

   2. (Crim. Law)
      (a) Submission to an injury by the party injured.
      (b) Tacit concurrence in the action of another. --Wharton.

Source : WordNet®

acquiescence
     n 1: acceptance without protest
     2: agreement with a statement or proposal to do something; "he
        gave his assent eagerly"; "a murmur of acquiescence from
        the assembly" [syn: {assent}]