(1):
(a.) Tending, or causing, to approach the center.
(2):
(a.) Expanding first at the base of the inflorescence, and proceeding in order towards the summit.
(3):
(a.) Having the radicle turned toward the axis of the fruit, as some embryos.
(4):
(a.) Progressing by changes from the exterior of a thing toward its center; as, the centripetal calcification of a bone.