• WordNet 3.6
    • n rotifer minute aquatic multicellular organisms having a ciliated wheel-like organ for feeding and locomotion; constituents of freshwater plankton
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Webster's Revised Unabridged Dictionary
    • n Rotifer (Zoöl) One of the Rotifera. See Illust. in Appendix.
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Century Dictionary and Cyclopedia
    • n rotifer The name-giving genus of Rotifera, based upon a species called R. vulgaris, and now placed in the family Philodinidæ, including forms which swim or creep like a leech, and have a forked, jointed, telescopic foot.
    • n rotifer Hence [lowercase] One of the Rotifera (which see); any wheel-animalcule. Rotifers are found all over the world, in salt as well as fresh water, though chiefly in the latter; they often swarm in infusions with other animalcules; a few are parasitic. Many rotifers can be desiccated and kept in a dry state for months and still be revived by the application of moisture.
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Chambers's Twentieth Century Dictionary
    • n Rotifer rōt′if-ėr one of a class of minute aquatic animals, popularly called wheel-animalcules, with an anterior equipment of cilia whose movements suggest a rapidly rotating wheel
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Webster's Revised Unabridged Dictionary
NL. see Rotifera
Chambers's Twentieth Century Dictionary
L. rota, a wheel, ferre, to carry.


In literature:

Its normal form is rigidly adhered to as that of a rotifer or a crustacean.
"Scientific American Supplement, Vol. XIX, No. 470, Jan. 3, 1885" by Various
The life cycles, accurately known, of monads repeat themselves as accurately as those of rotifers or planarians.
"Scientific American Supplement, No. 643, April 28, 1888" by Various
For the body of a many-celled Wheel Animalcule or Rotifer is no bigger than many a Protozoon.
"The Outline of Science, Vol. 1 (of 4)" by J. Arthur Thomson
One dries up a rotifer: good night to him; somebody soaks him a little, and he wakes up to bid you good day.
"The Man With The Broken Ear" by Edmond About
Professor Wilder and his wife are doing rotifers.
"Priscilla's Spies" by George A. Birmingham
One of the rotifers frequently acts as if engaged in play.
"The Dawn of Reason" by James Weir
There's one tentacled thing that reminds me of a frightened rotifer.
"Competition" by James Causey
This is well seen among the common rotifers, where the males are much smaller than the females and very degenerate.
"The Truth About Woman" by C. Gasquoine Hartley
As usual the Kentish Town ponds were productive of objects, and among them were several rotifers not found in the previous months.
"Marvels of Pond-life" by Henry J. Slack
Those that are usually dwelt on are treated with the Rotifers and Nematoda and Turbellaria.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5" by Various
You will see many forms that are strange to you, and we will suppose that the first is that of one of the rotifers.
"Through a Microscope" by Samuel Wells
Among these must not be forgotten the Rotifers, or wheel-bearing animals.
"Stories of the Universe: Animal Life" by B. Lindsay
Rotifers can be found in almost any stagnant water.
"Elementary Zoology, Second Edition" by Vernon L. Kellogg

In news:

A bdelloid rotifer under a microscope.
In Mother Nature's edition of the TV reality show Survivor, the bdelloid rotifers would probably be the last animals standing.

In science:

Paramecium cells swim to evade predator rotifers.
The hydrodynamics of swimming microorganisms