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.

relating to the matter under consideration.

having precise or logical relevance to the matter at hand; "a list of articles pertinent to the discussion"; "remarks that were to the point"

being of striking appropriateness and pertinence; "the successful copywriter is a master of apposite and evocative verbal images"; "an apt reply"

Having logical, precise relevance to the matter at hand.