Definition of rotifer
: any of a class (Rotifera of the phylum Aschelminthes) of minute usually microscopic but many-celled chiefly freshwater aquatic invertebrates having the anterior end modified into a retractile disk bearing circles of strong cilia that often give the appearance of rapidly revolving wheels
Recent Examples of rotifer from the Web
Shain says samples of the Icelandic rotifers were frozen at -80 degrees Fahrenheit for weeks and recovered just fine.
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Origin and Etymology of rotifer
ultimately from Latin rota + -fer
First Known Use: 1777See Words from the same year
Medical Definition of rotifer
: any member of the class Rotifera
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