Source : Webster's Revised Unabridged Dictionary (1913)

Unique \U*nique"\, a. [F. unique; cf. It. unico; from L. unicus,
   from unus one. See {One}.]
   Being without a like or equal; unmatched; unequaled;
   unparalleled; single in kind or excellence; sole. --
   {U*nique"ly}, adv. -- {U*nique"ness}, n.

Unique \U*nique"\, n.
   A thing without a like; something unequaled or unparalleled.
   [R.]

         The phenix, the unique pf birds.         --De Quincey.

Source : WordNet®

unique
     adj 1: radically distinctive and without equal; "he is alone in the
            field of microbiology"; "this theory is altogether
            alone in its penetration of the problem"; "Bach was
            unique in his handling of counterpoint"; "craftsmen
            whose skill is unequaled"; "unparalleled athletic
            ability"; "a breakdown of law unparalleled in our
            history" [syn: {alone(p)}, {unequaled}, {unequalled},
            {unparalleled}]
     2: (followed by `to') applying exclusively to a given category
        or condition or locality; "a species unique to Australia"
        [syn: {unique(p)}]
     3: the single one of its kind; "a singular example"; "the
        unique existing example of Donne's handwriting"; "a unique
        copy of an ancient manuscript"; "certain types of problems
        have unique solutions" [syn: {singular}]
     4: highly unusual or rare but not the single instance; "spoke
        with a unique accent"; "had unique ability in raising
        funds"; "a frankness unique in literature"; "a unique
        dining experience"

Source : Free On-Line Dictionary of Computing

UNIQUE
     
         A {portable} {job control language}.
     
        ["The UNIQUE Command Language - Portable Job Control",
        I.A. Newman, Proc DATAFAIR 73, 1973, pp. 353-357].
     
        (1994-11-22)