diadromous

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Related to diadromously: catadromous

diadromous

[dī′ad·rə·məs]
(botany)
Having venation in the form of fanlike radiations.
(vertebrate zoology)
Of fish, migrating between salt and fresh waters.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.