anabranch

• POS: Noun
• HYPHEN: an=a=branch

CIDE DICTIONARY

anabranch, n. [Anastomosing + branch.].

 A branch of a river that reënters, or anastomoses with, the main stream; also, less properly, a branch which loses itself in sandy soil.  [1913 Webster]
"Such branches of a river as after separation reunite, I would term anastomosing branches; or, if a word might be coined, anabranches, and the islands they form branch islands."  [Webster 1913 Suppl.]

OXFORD DICTIONARY

anabranch, n. esp. Austral. a stream that leaves a river and re-enters it lower down.

Etymology

ANASTOMOSE + BRANCH