Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A horny external covering that encloses the polyp colonies of certain hydrozoans.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The outer hardened integument that covers most hydroids.

from the GNU version of the Collaborative International Dictionary of English

  • n. The outer, hardened integument which covers most hydroids.

from The Century Dictionary and Cyclopedia

  • n. The hard, horny, or chitinous ectodermal case or covering with which the soft parts of hydrozoans are often protected.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

peri- + Greek sarx, sark-, flesh.

from Wiktionary, Creative Commons Attribution/Share-Alike License

peri- + Ancient Greek for "flesh".

Examples

  • A transparent sheath known as the perisarc encases the colony.

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