water flea

noun

Definition of water flea 

: any of various small active dark or brightly colored aquatic crustaceans (such as a daphnia or cyclops)

Examples of water flea in a Sentence

Recent Examples on the Web

Peshkin’s own research focuses on the water flea, Latin name Daphnia, an insect barely visible to the naked eye. Karen Weintraub, BostonGlobe.com, "A doctor wages personal and professional battles against aging," 23 June 2018 But less welcome critters soon followed: sea lampreys, alewives, spiny water fleas, and the poster bivalves for ecological trouble, zebra and quagga mussels. Jim Higgins, Milwaukee Journal Sentinel, "Milwaukee loves its rivers and Lake Michigan — and keeps abusing them, too," 3 July 2018 Peshkin’s own research focuses on the water flea, Latin name Daphnia, an insect barely visible to the naked eye. Karen Weintraub, BostonGlobe.com, "A doctor wages personal and professional battles against aging," 23 June 2018 Peshkin’s own research focuses on the water flea, Latin name Daphnia, an insect barely visible to the naked eye. Karen Weintraub, BostonGlobe.com, "A doctor wages personal and professional battles against aging," 23 June 2018 Peshkin’s own research focuses on the water flea, Latin name Daphnia, an insect barely visible to the naked eye. Karen Weintraub, BostonGlobe.com, "A doctor wages personal and professional battles against aging," 23 June 2018 Peshkin’s own research focuses on the water flea, Latin name Daphnia, an insect barely visible to the naked eye. Karen Weintraub, BostonGlobe.com, "A doctor wages personal and professional battles against aging," 23 June 2018 Peshkin’s own research focuses on the water flea, Latin name Daphnia, an insect barely visible to the naked eye. Karen Weintraub, BostonGlobe.com, "A doctor wages personal and professional battles against aging," 23 June 2018 Peshkin’s own research focuses on the water flea, Latin name Daphnia, an insect barely visible to the naked eye. Karen Weintraub, STAT, "An anti-aging researcher faces the loss of his inspiration: his 96-year-old father," 20 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'water flea.' 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 water flea

1687, in the meaning defined above

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Last Updated

2 Dec 2018

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Time Traveler for water flea

The first known use of water flea was in 1687

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More Definitions for water flea

water flea

noun

Kids Definition of water flea

: a tiny often brightly colored freshwater animal related to the crab and lobster

More from Merriam-Webster on water flea

Britannica.com: Encyclopedia article about water flea

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