distributary

from WordNet (r) 3.0 (2006)

distributary
    n 1: a branch of a river that flows away from the main stream
         and does not rejoin it [ant: {affluent}, {confluent},
         {feeder}, {tributary}]

from The Collaborative International Dictionary of English v.0.48

Distributary \Dis*trib"u*ta*ry\, a.
   Tending to distribute or be distributed; that distributes;
   distributive.
   [1913 Webster]

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