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n. pl. bys·sus·es or bys·si (bĭs′ī′)
1. Zoology A mass of strong, silky filaments by which certain bivalve mollusks, such as mussels, attach themselves to rocks and other fixed surfaces.
2. A fine-textured linen of ancient times, used by the Egyptians for wrapping mummies.

[Middle English bissus, linen cloth, from Latin, from Greek bussos, linen; akin to Sanskrit picuḥ, cotton (of Dravidian origin), or ultimately from Egyptian w'ḏ, linen.]

bys′sal (bĭs′əl) adj.
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.


relating to the byssus of molluscs
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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In a 757 mm fish that consumed over 100 zebra mussels, the presence of numerous byssal threads suggests black carp can dislodge them from a substrate surface.
One known class of protein-based marine adhesives is found in both the byssal threads used to anchor mussels to their substrates and in the cement used for tube construction in some tube-dwelling polychaetes.
In fact, the structure of egg cases--with long, curled horns on the ends and sticky byssal threads attached along the margins (Stevenson et al., 2007), adaptations that presumably keep them from being swept into less favorable areas by bottom currents--makes them ideally suited to cling to passing lines and hooks as well as to other egg cases.
Investigations into the factors influencing locomotion and byssal reattachment in pearl oyster juveniles are especially uncommon.
Effects of cypermethrin (Pyrethroid insecticide) on the valve activity behavior, byssal thread formation, and survival in air of the marine mussel Mytilus galloprovincialis.
They accomplish this with small adhesive byssal threads that contain DOPA--a modified amino acid that includes an organic compound that preferentially bonds with metal atoms present on the surface of most rocks.
The byssal threads they use to affix to surfaces allow them to resist the forces that would tear them from their moorings.
Plaque is that part of the byssal thread which is attached with the foreign surface, whereas the stem is connected with tissues of the organism by means of the root.
Recently a team of researchers from RIKEN found the inspiration they needed to improve titanium surfaces by studying mussels, who are able to attach themselves to smooth metallic surfaces thanks to special proteins found in their byssal threads.
Effects of salinity and temperature on a survival and byssal attachment of the lion's paw scallop Nodipecten nodosus at its southern distribution limit.