elongate

Short definition from Wiktionary

Adjective

1. 1
   Elongated, extended, lengthened; (especially biology) having a long and slender form.

Verb

1. 1
   To make (something) long or longer, for example, by pulling or stretching; to make (something) elongated; to extend, to lengthen.
2. 2
   Followed by from: to move to or place (something) at a distance from another thing; to remove.
3. 3
   To become long or longer, for example, by being pulled or stretched; to become elongated.
4. 4
   Of a plant part: to grow long; also, to have a long and slender or tapering form.
5. 5
   Followed by from: to be at a distance, or move away, from a thing; to depart; (specifically, astronomy) of a planet, star, or other astronomical object: to appear to recede from the sun or a fixed point in the celestial sphere.