byssus

American  

[bis-uhs] / ˈbɪs əs /

noun

• byssuses,
  plural
• byssi
  plural

1. Zoology. a collection of silky filaments by which certain mollusks attach themselves to rocks.

2. an ancient cloth, thought to be of linen, cotton, or silk.

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byssus British  

/ ˈbɪsəs /

noun

1. a mass of strong threads secreted by a sea mussel or similar mollusc that attaches the animal to a hard fixed surface

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Other Word Forms

Derived Forms

• byssaceous
  adjective
• byssal
  adjective
• byssoid
  adjective

Inflected Forms

Nouns

• byssi
  plural
• byssuses
  plural

Etymology

Origin of byssus

1350–1400; Middle English < Latin < Greek býssos a fine cotton or linen < Semitic; compare Hebrew būts

Example Sentences

See Examples For:

byssus byssuses

Another key outcome of the research is the transformation of pen shell byssus, which was previously discarded as waste, into a valuable textile.

From Science Daily ● Feb. 9, 2026

The researchers discovered that the byssus from Atrina pectinata closely matches the physical and chemical properties of the original sea silk fibers.

From Science Daily ● Feb. 9, 2026

This area of contact between the living tissue and the non-living byssus stem root is known as a biointerface, and is the focus of a study by McGill professor of Chemistry Matthew Harrington.

From Science Daily ● Dec. 1, 2023

The byssus is not unsafe for diners, but it is unattractive.

From Washington Post ● Oct. 29, 2020

This was the vegetable wool of the ancients, which many learned authorities have identified with the byssus, in bandages of cloth made from which the old Egyptians wrapped their mummies.

From The Romance of Industry and Invention by Robert Cochrane

Eventually the larvae find a surface to their liking and settle down, mooring themselves with sticky, hairlike threads called byssuses.

From Time Magazine Archive