Source : Webster's Revised Unabridged Dictionary (1913)

Precise \Pre*cise"\, a. [L. praecisus cut off, brief, concise,
   p. p. of praecidere to cut off in front, to cut off; prae
   before + caedere to cut: cf. F. pr['e]cis. Cf. {Concise}.]
   1. Having determinate limitations; exactly or sharply defined
      or stated; definite; exact; nice; not vague or equivocal;
      as, precise rules of morality.

            The law in this point is not precise. --Bacon.

            For the hour precise Exacts our parting hence.
                                                  --Milton.

   2. Strictly adhering or conforming to rule; very nice or
      exact; punctilious in conduct or ceremony; formal;
      ceremonious. --Addison.

            He was ever precise in promise-keeping. --Shak.

   Syn: Accurate; exact; definite; correct; scrupulous;
        punctilious; particular; nice; formal. See {Accurate}.
        -- {Pre*cise"ly}, adv. -- {Pre*cise"ness}, n.

Source : WordNet®

preciseness
     n 1: clarity as a consequence of precision [syn: {clearcutness}]
     2: the quality of being reproducible in amount or performance;
        "he handled it with the preciseness of an automaton";
        "note the meticulous precision of his measurements" [syn:
        {precision}] [ant: {impreciseness}, {impreciseness}]