from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Living in fresh water but migrating to marine waters to breed. Used of fish.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. that lives in fresh water and breeds in the sea
- adj. Of a fern in which the first veins in a frond segment are produced towards the base of the frond.
from the GNU version of the Collaborative International Dictionary of English
- adj. 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
- adj. Living in fresh water, and going to the sea to spawn; -- opposed to
anadromous, and said of the eel.
from The Century Dictionary and Cyclopedia
- Running down; descending: applied to certain fishes which descend streams to the sea to spawn: opposed to anadromous.
- In botany, having the first set of nerves (in each segment of a fern frond) given off on the basal side of the midrib, as in Osmunda. Compare anadromous .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. migrating from fresh water to the sea to spawn
Sorry, no etymologies found.