• Webster's Revised Unabridged Dictionary
    • n Porpita (Zoöl) A genus of bright-colored Siphonophora found floating in the warmer parts of the ocean. The individuals are round and disk-shaped, with a large zooid in the center of the under side, surrounded by smaller nutritive and reproductive zooids, and by slender dactylozooids near the margin. The disk contains a central float, or pneumatocyst.
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Century Dictionary and Cyclopedia
    • n porpita The typical genus of the family Porpitidæ.
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Webster's Revised Unabridged Dictionary
NL., from Gr. brooch