cen·trip·e·tal /sɛnˈtrɪpətḷ/
 (a.)向心的
 cen·trip·e·tal /sɛnˈtrɪpətḷ/ 形容詞
 (拉centripetus)向心的,傳入的
 Cen·trip·e·tal a.
 1. Tending, or causing, to approach the center.
 2. Bot. (a) Expanding first at the base of the inflorescence, and proceeding in order towards the summit. (b) Having the radicle turned toward the axis of the fruit, as some embryos.
 3. Progressing by changes from the exterior of a thing toward its center; as, the centripetal calcification of a bone.
 Centripetal force Mech., a force whose direction is towards a center, as in case of a planet revolving round the sun, the center of the system, See Centrifugal force, under Centrifugal.
 Centripetal impression Physiol., an impression (sensory) transmitted by an afferent nerve from the exterior of the body inwards, to the central organ.
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 centripetal
      adj 1: tending to move toward a center; "centripetal force" [ant: centrifugal]
      2: tending to unify [syn: unifying(a)]
      3: of a nerve fiber or impulse originating outside and passing
         toward the central nervous system; "sensory neurons" [syn:
          receptive, sensory(a)]