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noun
BiologyAny of a group of flattened elliptical flagellates, formerly regarded as protozoans by zoologists or as green algae by botanists, and typically characterized by chloroplasts and two flagella.
Now often treated as the protist phylum Cryptomonada (or Cryptophyta).
Origin
Mid 19th century; earliest use found in Andrew Pritchard (1804–1882), microscopist. From crypto- + monad.
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