• WordNet 3.6
    • n Peridinium type genus of the family Peridiniidae
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Century Dictionary and Cyclopedia
    • n peridinium The typical genus of peridiniidæ. There are several species, as P. tabulatum of Great Britian and P. sanguineum of India. The latter imparts a bloody color to water that contains it. Some are called wreath-animalcules.
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