catadromous

• POS: Adjective
• HYPHEN: ca=tad=ro=mous

CIDE DICTIONARY

catadromous, a. [Gr. kata` down + dro`mos a running.].

•  Having the lowest inferior segment of a pinna nearer the rachis than the lowest superior one; -- said of a mode of branching in ferns, and opposed to anadromous.  [1913 Webster]
•  Living in fresh water, and going to the sea to spawn; -- opposed to anadromous, and said of the eel.  [1913 Webster]

OXFORD DICTIONARY

catadromous, adj. (of a fish, e.g. the eel) that swims down rivers to the sea to spawn (cf. ANADROMOUS).

Etymology

Gk katadromos f. kata down + dromos running