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Related to perisarc: Coenosarc


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

[peri- + Greek sarx, sark-, flesh.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Zoology) the outer chitinous layer secreted by colonial hydrozoan coelenterates, such as species of Obelia
[C19: from peri- + -sarc, from Greek sarx flesh]
ˌperiˈsarcal, ˌperiˈsarcous adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
This assay was previously used as a histological stain in studies of DOPA-containing adhesive proteins in polychaetes (Wang and Stewart, 2012) and DOPA-hardened hydroid perisarc (Hwang et al., 2013).
Marine hydroid perisarc: a chitin- and melanin-reinforced composite with DOPA-iron(III) complexes.
Hydroid: stolonal, hydranth 1-6 mm high, with very short pedicel, perisarc smooth.
No annulations on the perisarc were seen and no gonophores were observed.
Long pedicels, 3.4-4.6 gin in length, 50-68 [micron]m in diameter; pedicel base with 2, 3 or 4 annulations; perisarc thick.
Podocysts are essentially polyp-derived tissues encysted in a protective layer of perisarc, and are able to withstand extreme salinity changes and desiccation, sometimes for years (Dumont, 1994; Ikeda et al., 2011; Carrette et al., 2014).
caspia is difficult to control because colonies are able to regress, forming menonts, which are small pieces of tissue within the perisarc of either the hydrocauli or hydrorhiza.
The colonies of thecate hydroids are covered with a chitinous tubelike outer skeleton, the perisarc. The perisarc shows a species-specific pattern of annuli, curvatures, and smooth parts.
The surface of the pawn is smooth and the first beginnings of a perisarc, an outer noncellular protective coating, are seen at the base.
These mature colonies degenerated rapidly, and colonies with only perisarcs were observed in August or September (surface water temperature, 26-30 [degrees]C),