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
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/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
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