'Catadromous' definitions:
Definition of 'catadromous'
From: WordNet
adjective
Migrating from fresh water to the sea to spawn [ant: anadromous, diadromous]
Definition of 'Catadromous'
From: GCIDE
- Catadromous \Ca*tad"ro*mous\, a. [Gr. kata` down + dro`mos a running.]
- 1. (Bot.) 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]
- 2. (Zool.) Living in fresh water, and going to the sea to spawn; -- opposed to anadromous, and said of the eel. [1913 Webster]