Ca*tad"ro*mous (?), a. [Gr. down + 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.

2. Zool.

Living in fresh water, and going to the sea to spawn; -- opposed to anadromous, and of the eel.


© Webster 1913.

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