To make long or longer; lengthen; extend, stretch, or draw out in length: as, to elongate a rope by splicing.To remove further off.To recede; move to a greater distance; particularly, to recede apparently from the sun, as a planet in its orbit.Lengthened; extended or produced; attenuated; specifically, in zoology and botany, disproportionately or comparatively long or extended: as, a worm has an elongate body; a proboscis is an elongate snout; elongate antennæ are about as long as the body of an insect; elongate elytra extend beyond the abdomen; an elongate flower-stem.