noun · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/ˈbɪsəs/
rhymes with -ɪsəs
1
noun
Meaning 1
The long fine silky filaments excreted by several mollusks (particularly Pinna nobilis) by which they attach themselves to the sea bed, and from which sea silk is manufactured.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
Sea silk manufactured from these filaments.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
The stipe or stem of some fungi which are particularly thin and thread-like.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
Topics: biology, mycology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
tuft of strong filaments by which e.g. a mussel makes itself fast to a fixed surface
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: beard
Antonyms: none provided
Broader terms: fiber, fibre
History
Etymology
From Latin byssus, from Ancient Greek βύσσος (bússos, “flax; flax cotton”), from a Semitic source cognate to Hebrew בּוּץ (būṣ, “byssus”) and Aramaic בּוּצָא (būṣā, “byssus”)
Across languages
Translations
10 source translations are retained for this English entry.