def·er·ent 2 
(dĕfər-ənt, dĕfrənt)
(dĕfər-ənt, dĕfrənt)adj.
1. Anatomy Carrying down or away. Used of a duct or vessel.
2. Serving or adapted to carry or transport.
[Middle English defferent, from Latin dēferēns, dēferent-, present participle of dēferre, to carry away; see DEFER2.]