Source : Webster's Revised Unabridged Dictionary (1913)

Expansive \Ex*pan"sive\, a. [Cf. F. expansif.]
   Having a capacity or tendency to expand or dilate; diffusive;
   of much expanse; wide-extending; as, the expansive force of
   heat; the expansive quality of air.

         A more expansive and generous compassion. --Eustace.

         His forehead was broad and expansive.    --Prescott.
   -- {Ex*pan"sive*ly}, adv. -{Ex*pan"sive*ness}, n.

Source : WordNet®

expansive
     adj 1: able or tending to expand or characterized by expansion;
            "Expansive materials"; "the expansive force of fire"
            [ant: {unexpansive}]
     2: impressive in scale; "an expansive lifestyle"; "in the grand
        manner" [syn: {grand}]
     3: marked by exaggerated feelings of euphoria and delusions of
        grandeur
     4: friendly and open and willing to talk; "wine made the guest
        expansive" [syn: {talkative}]