Source : Webster's Revised Unabridged Dictionary (1913)

Pertinent \Per"ti*nent\, a. [L. pertinens, -entis, p. pr. of
   pertinere: cf. F. pertinent. See {Pertain}.]
   1. Belonging or related to the subject or matter in hand; fit
      or appropriate in any way; adapted to the end proposed;
      apposite; material; relevant; as, pertinent illustrations
      or arguments; pertinent evidence.

   2. Regarding; concerning; belonging; pertaining. [R.]
      ``Pertinent unto faith.'' --Hooker.

   Syn: Apposite; relevant; suitable; appropriate; fit. --
        {Per"ti*nent*ly}, adv. -- {Per"ti*nent*ness}, n.

Source : WordNet®

pertinent
     adj 1: having precise or logical relevance to the matter at hand;
            "a list of articles pertinent to the discussion";
            "remarks that were to the point" [syn: {to the
            point(p)}]
     2: being of striking appropriateness and pertinence; "the
        successful copywriter is a master of apposite and
        evocative verbal images"; "an apt reply" [syn: {apposite},
         {appropriate}, {apt}]