Standard Lemma guide

capsaicin

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.

  • /kæpˈseɪəsən/
  • /kæpˈseɪsən/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: K AE2 P S EY1 S AH0 N Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

A chemical compound found in chilli peppers, which is responsible for their piquancy.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Topics: chemistry, natural-sciences, organic-chemistry, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

colorless pungent crystalline compound derived from capsicum; source of the hotness of hot peppers of the genus Capsicum such as chili and cayenne and jalapeno

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: chemical irritant

History

Etymology

Arbitrary alteration of earlier capsicine, capsicin (“material extracted from cayenne pepper”), presumably to prevent confusion, from German Capsicin, from New Latin capsicum + German -in. Name introduced by John Clough Thresh (1850–1932) in “Capsaicin, the Active Principle of Capsicum Fruits”.

Across languages

Translations

23 source translations are retained for this English entry.

  • Catalan: capsaïcina — chemical compound
  • Chinese Mandarin: 辣椒素 (làjiāosù) — chemical compound
  • Chinese Mandarin: 辣椒鹼 /辣椒碱 (làjiāojiǎn) — chemical compound
  • Czech: kapsaicin — chemical compound
  • Finnish: kapsaisiini — chemical compound
  • French: capsaïcine — chemical compound
  • French: capsaïsine — chemical compound
  • German: Capsaicin — chemical compound
  • Greek: καψαϊκίνη (kapsaïkíni) — chemical compound
  • Hungarian: kapszaicin — chemical compound
  • Icelandic: kapsaísín — chemical compound
  • Icelandic: capsæsín — chemical compound
  • Italian: capsaicina — chemical compound
  • Japanese: カプサイシン (kapusaishin) — chemical compound
  • Korean: 캡사이신 (kaepsaisin) — chemical compound
  • Polish: kapsaicyna — chemical compound
  • Portuguese: capsaicina — chemical compound
  • Romanian: capsaicină — chemical compound
  • Russian: капсаици́н (kapsaicín) — chemical compound
  • Spanish: capsaicina — chemical compound
  • Swedish: capsaicin — chemical compound
  • Thai: แคปไซซิน (kɛ́p-sai-sin) — chemical compound
  • Turkish: kapsaisin — chemical compound