Source : Webster's Revised Unabridged Dictionary (1913)

Unanimous \U*nan"i*mous\, a. [L. unanimus, unanimus; unus one +
   animus mind: cf. F. unanime. See {Unit}, and {Animate}.]
   1. Being of one mind; agreeing in opinion, design, or
      determination; consentient; not discordant or dissentient;
      harmonious; as, the assembly was unanimous; the members of
      the council were unanimous. ``Both in one faith
      unanimous.'' --Milton.

   2. Formed with unanimity; indicating unanimity; having the
      agreement and consent of all; agreed upon without the
      opposition or contradiction of any; as, a unanimous
      opinion; a unanimous vote. -- {U*nan"i*mous*ly}, adv. --
      {U*nan"i*mous*ness}, n.

Source : WordNet®

unanimous
     adj 1: in complete agreement; "a unanimous decision" [syn: {consentaneous},
             {consentient}]
     2: acting together as a single undiversified whole; "a solid
        voting bloc" [syn: {solid}]