centripetal

1. Moving or directed toward a center or axis.
2. Operated by means of centripetal force.
3. Physiology. Transmitting nerve impulses toward the central nervous system; afferent.
4. Botany. Developing or progressing inward toward the center or axis, as in the head of a sunflower, in which the oldest flowers are near the edge and the youngest flowers are in the center.
5. Tending or directed toward centralization: the centripetal effects of a homogeneous population.

1. Moving or directed toward a center or axis.
2. Transmitting nerve impulses toward the central nervous system; afferent.

Moving toward a center.

Developing or progressing inward toward the center or axis, as in the head of a sunflower in which the oldest flowers are near the edge and the youngest flowers are in the center.

The adjective has 3 meanings:

Meaning #1: tending to move toward a center
  Antonym: centrifugal (meaning #1)

Meaning #2: tending to unify
  Synonym: unifying

Meaning #3: of a nerve fiber or impulse originating outside and passing toward the central nervous system
  Synonyms: receptive, sensory