anad·​ro·​mous | \ ə-ˈna-drə-məs How to pronounce anadromous (audio) \

Definition of anadromous

: ascending rivers from the sea for breeding shad are anadromous — compare catadromous

Examples of anadromous in a Sentence

Recent Examples on the Web California is unique in having four separate annual pulses of anadromous (migrating from saltwater to freshwater) salmon in a single river. Star Tribune, 27 July 2021 In an effort to help combat the problem, the state will be releasing almost 17 million of the anadromous fish (those that live part of their lives in freshwater, part in the ocean) into the San Francisco Bay. Jordan Strickler, Forbes, 11 June 2021 Over the last 50 years, anadromous fish populations have declined significantly in California, Oregon and Washington. New York Times, 19 Apr. 2021 This 250-mile-long nook in the Bering Sea is largely undeveloped—an area the size of Iceland, riddled with lakes, streams and wetlands that provide some of the planet’s best habitat for anadromous fish. Miranda Weiss, Wired, 13 June 2020 The landmark structures will be modified with different technologies that are designed to allow the anadromous fish — which spend most of their lives at sea but spawn in fresh water — to swim over or around them and continue their journey upstream. Jon Hurdle, New York Times, 25 Feb. 2020 Creeks and streams that hold anadromous fish require more permitting for development, but Alaska doesn’t have the resources to fully survey every small waterway, some of which are just a few feet wide. Alex Robinson, Outdoor Life, 16 Jan. 2020 Carskadon, a long-time salmon and steelhead angler who’s suffering along with many of us during the current downturn in anadromous fish fortunes, was stunned to learn about a recent vigorous spurt of sales for surf perch tackle. oregonlive, 19 Jan. 2020 The paltry showing comes despite plenty of rain — about equal to the long-term average — which is usually a big help to anadromous fish. Peter Fimrite,, 17 Jan. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'anadromous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of anadromous

circa 1753, in the meaning defined above

History and Etymology for anadromous

Greek anadromos running upward, from anadramein to run upward, from ana- + dramein to run — more at dromedary

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The first known use of anadromous was circa 1753

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Last Updated

3 Aug 2021

Cite this Entry

“Anadromous.” Dictionary, Merriam-Webster, Accessed 21 Sep. 2021.

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