(1):

(a.) To remove further off.

(2):

(a.) Drawn out at length; elongated; as, an elongate leaf.

(3):

(a.) To lengthen; to extend; to stretch; as, to elongate a line.

(4):

(v. i.) To depart to, or be at, a distance; esp., to recede apparently from the sun, as a planet in its orbit.