adjective Botany, Mycology.
- growing or moving toward the base of a structure or part.
- (of leaves and flowers) produced in order from the apex downwards so that the youngest are at the baseCompare acropetal
- Of or relating to the development or maturation of tissues or organs or the movement of substances, such as hormones, from the apex downward toward the base.
- Relating to the movement of substances, such as hormones, or the progressive development of tissues in a direction away from the tip and towards the base of a root or shoot in a plant.