acropetal
Pronunciation: /əˈkrɒpɪt(ə)l/
adjective
Botany- (of growth or development) upwards from the base or point of attachment. The opposite of basipetal.
- (of the movement of dissolved substances) outwards towards the shoot and root apices.

Origin:
late 19th century: from Greek akron 'tip' + Latin petere 'seek' + -al