elongate
Concise Oxford English Dictionary © 2008 Oxford University Press:
elongate /ˈiːlɒŋgeɪt/
▶verb (usu. as adj. elongated) make or become longer. ▶adjective Biology long; elongated.
– origin ME (in the sense ‘move away’): from late L. elongat-, elongare ‘place at a distance’.
'elongate' also found in these Oxford entries:

