Standard Lemma guide

myosin

noun · 3 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.

  • /ˈmaɪ.oʊsɪn/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: M AY1 AH0 S AH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Any of a large family of motor proteins found in eukaryotic tissues, allowing mobility in muscles.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

An albuminous body present in dead muscle formed in the process of coagulation which takes place in rigor mortis.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

the commonest protein in muscle; a globulin that combines with actin to form actomyosin

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: globulin

History

Etymology

From myo- (“relating to muscle”), and Ancient Greek μυός (muós), genitive of μῦς (mûs, “muscle”) + -in.

Across languages

Translations

6 source translations are retained for this English entry.

  • French: myosine — motor protein
  • German: Myosin — motor protein
  • Irish: mióisin — motor protein
  • Italian: miosina — motor protein
  • Spanish: miosina — motor protein
  • Swedish: myosin — motor protein