Daphnia

[daf-nee-uh]

noun

a genus of tiny, freshwater crustaceans having a transparent body, used in biological research and as food for tropical fish.

Compare water flea.

Origin of Daphnia

1840–50; < New Latin, perhaps after Daphne; see -ia

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for daphnia

Historical Examples

Wolfgang Ostwald has produced experimentally, through variation of temperature, dimorphism of form in Daphnia.
The Organism as a Whole
Jacques Loeb
Such small creatures as Daphnia pulex, Cyclops quadricornis and Rotifera should be introduced into ponds.
Amateur Fish Culture
Charles Edward Walker
Both Daphnia and Cyclops are bred in stagnant water in which there should be a good stock of weeds.
Amateur Fish Culture
Charles Edward Walker
Daphnia must be reared in a stagnant pond, the fresh-water shrimp (Gammarus pulex) in running water, with plenty of weeds.
Amateur Fish Culture
Charles Edward Walker
Some of these belong to the genus Daphnia, and differ from the species found in other situations by their glassy transparency.
The Life of Crustacea
William Thomas Calman

British Dictionary definitions for daphnia

daphnia

noun

any water flea of the genus Daphnia, having a rounded body enclosed in a transparent shell and bearing branched swimming antennae

Word Origin

C19: from New Latin, probably from Daphne

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Daphnia

Origin of .css-1fxfie5{font-size:22px;}@media (max-width:768px){.css-1fxfie5{font-size:18px;margin:0 10px 10px 0;word-break:break-all;word-wrap:break-word;-webkit-hyphens:auto;-moz-hyphens:auto;-ms-hyphens:auto;hyphens:auto;line-height:22px;}}Daphnia

Examples from the Web for daphnia

Historical Examples

Wolfgang Ostwald has produced experimentally, through variation of temperature, dimorphism of form in Daphnia.

Such small creatures as Daphnia pulex, Cyclops quadricornis and Rotifera should be introduced into ponds.

Both Daphnia and Cyclops are bred in stagnant water in which there should be a good stock of weeds.

Daphnia must be reared in a stagnant pond, the fresh-water shrimp (Gammarus pulex) in running water, with plenty of weeds.

Some of these belong to the genus Daphnia, and differ from the species found in other situations by their glassy transparency.

daphnia

Word Origin

Origin of Daphnia