Source : Webster's Revised Unabridged Dictionary (1913)

Elongate \E*lon"gate\, v. t. [imp. & p. p. {Elongated}; p. pr. &
   vb. n. {Elongating}.] [LL. elongatus, p. p. of elongare to
   remove, to prolong; e + L. longus long. See {Long}, a., and
   cf. {Eloign}.]
   1. To lengthen; to extend; to stretch; as, to elongate a
      line.

   2. To remove further off. [Obs.] --Sir T. Browne.

Elongate \E*lon"gate\, v. i.
   To depart to, or be at, a distance; esp., to recede
   apparently from the sun, as a planet in its orbit. [R.]

Elongate \E*lon"gate\, a. [LL. elongatus.]
   Drawn out at length; elongated; as, an elongate leaf. ``An
   elongate form.'' --Earle.

Source : WordNet®

elongate
     v : make long or longer by pulling and stretching; "stretch the
         fabric" [syn: {stretch}]

elongate
     adj 1: of a leaf shape; long and narrow [syn: {linear}]
     2: having notably more length than width; being long and
        slender; "an elongate tail tapering to a point"; "the old
        man's gaunt and elongated frame" [syn: {elongated}]