Standard Lemma guide

chitin

noun · 2 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.

  • UK: /ˈkʌɪtɪn/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • kīʹtĭn
  • US: /ˈkaɪtɪn/
  • rhymes with -aɪtɪn

1

noun

Meaning 1

A complex polysaccharide, a polymer of N-acetylglucosamine, found in the exoskeletons of arthropods and in the cell walls of fungi; thought to be responsible for some forms of asthma in humans.

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: entomolin

Antonyms: none provided

2

noun

Meaning 2

a tough semitransparent horny substance; the principal component of the exoskeletons of arthropods and the cell walls of certain fungi

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: polysaccharide, polyose

History

Etymology

Etymology tree Ancient Greek χῐτών (khĭtṓn)der. Latin chitōnder. French chitinebor. English chitin From French chitine, from Latin chitōn (“mollusk”), from Ancient Greek χιτών (khitṓn). See also chiton.

Across languages

Translations

34 source translations are retained for this English entry.

  • Armenian: խիտին (xitin) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Bulgarian: хитин (hitin) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Catalan: quitina — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Chinese Mandarin: 甲殼素 /甲壳素 (jiǎqiàosù) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Chinese Mandarin: 幾丁質 /几丁质 (jīdīngzhì) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Czech: chitin — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Esperanto: kitino — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Finnish: kitiini — polymer of N-acetylglucosamine, found in arthropod and fungi
  • French: chitine — polymer of N-acetylglucosamine, found in arthropod and fungi
  • German: Chitin — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Hindi: कठिनि (kaṭhini) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Indonesian: kitin — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Italian: chitina — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Japanese: キチン (kichin) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Kannada: ಕೈಟಿನ್ (kaiṭin) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Kazakh: хитин (xitin) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Korean: 키틴 (kitin) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Korean: 갑각소 (gapgakso) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Latin: chitinum — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Macedonian: хитин (hitin) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Malay: kitin — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Occitan: quitina — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Persian: کیتین — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Portuguese: quitina — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Romanian: chitină — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Russian: хити́н (xitín) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Serbo-Croatian: hitin — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Spanish: quitina — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Tamil: கைட்டின் (kaiṭṭiṉ) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Thai: ไคทิน — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Thai: ไคติน — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Turkish: kitin — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Ukrainian: хіти́н (xitýn) — polymer of N-acetylglucosamine, found in arthropod and fungi
  • Uzbek: xitin — polymer of N-acetylglucosamine, found in arthropod and fungi