Standard Lemma guide

byssus

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /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.

  • Finnish: byssus — filaments of molluscs
  • French: byssus — filaments of molluscs
  • Italian: bisso — filaments of molluscs
  • Māori: kumikumi — filaments of molluscs
  • Polish: bisior — filaments of molluscs
  • Spanish: biso — filaments of molluscs
  • French: byssus — historic fiber
  • Italian: bisso — historic fiber
  • Polish: bisior — historic fiber
  • Russian: виссо́н (vissón) — historic fiber