Source : Webster's Revised Unabridged Dictionary (1913)

Separate \Sep"a*rate\, p. a. [L. separatus, p. p. ]
   1. Divided from another or others; disjoined; disconnected;
      separated; -- said of things once connected.

            Him that was separate from his brethren. --Gen.
                                                  xlix. 26.

   2. Unconnected; not united or associated; distinct; -- said
      of things that have not been connected.

            For such an high priest became us, who is holy,
            harmless, undefiled, separate from sinnere. --Heb.
                                                  vii. 26.

   3. Disunited from the body; disembodied; as, a separate
      spirit; the separate state of souls.

   {Separate estate} (Law), an estate limited to a married woman
      independent of her husband.

   {Separate maintenance} (Law), an allowance made to a wife by
      her husband under deed of separation. -- {Sep"a*rate*ly},
      adv. -- {Sep"a*rate*ness}, n.

Source : WordNet®

separateness
     n 1: the state of being several and distinct [syn: {discreteness},
           {distinctness}, {severalty}]
     2: political independence; "seeking complete political
        separateness for Taiwan"
     3: the quality of being not alike; being distinct or different
        from that otherwise experienced or known [syn: {otherness},
         {distinctness}]