Definitions for hydrothecas
  • Hydrotheca (n.) - One of the calicles which, in some Hydroidea (Thecaphora), protect the hydrants. See Illust. of Hydroidea, and Campanularian.
  • Hydrothecae (pl. ) - of Hydrotheca
  • Hydrothecas (pl. ) - of Hydrotheca
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