elongate
US /ɪˈlɑːŋ.ɡeɪt/
UK /ɪˈlɑːŋ.ɡeɪt/

1.
allungare
to become or make something become longer, and often thinner:
:
•
The cells elongate as they take in water.
1.
allungare
having a shape that is much longer than it is wide:
:
•
Acanthoclinus are elongate fishes.