dinoflagellate(redirected from Pyrrophyte)
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A plantlike flagellate of the subclass Phytomastigophorea, some species of which (for example, Karenia brevis) produce a potent neurotoxin that may cause severe food intoxication following ingestion of parasitized shellfish.
[G. dinos, whirling, + L. flagellum, a whip]
Farlex Partner Medical Dictionary © Farlex 2012
dinoflagellate(dī′nō-flăj′ə-lĭt, -lāt′, -flə-jĕl′ĭt)
Any of numerous minute, chiefly marine protists of the phylum Dinoflagellata, characteristically having two flagella and a cellulose covering and forming one of the chief constituents of plankton. They include bioluminescent species, photosynthetic species, and species that produce red tide.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
dinoflagellateany of a group of unicellular biflagellate aquatic organisms forming a constitutent of plankton now normally placed in the division Pyrrhophyta. They can be regarded as an order of protozoans (Dinoflagellata) or a class of algae (Dinophyceae).
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005