elongate
verb [intransitive, transitive]- elongate (something)
to become longer; to make something longer （使）变长，伸长；拉长 Hold that stretch as you breathe out, elongating the spine from the base. 呼气时保持伸展，从底部拉长脊柱。 The acid causes the cells to elongate by increasing the uptake of water. 酸通过增加水的吸收使细胞伸长。
Word Originlate Middle English (in the sense ‘move away’): from late Latin elongat- ‘placed at a distance’, from the verb elongare, from Latin e- (variant of ex-) ‘away’ + longe ‘far off’, longus ‘long’.