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capsaicin Syllabification: cap·sa·i·cin
Pronunciation: /kapˈsāəsən/

Definition of capsaicin in English:


A compound that is responsible for the pungency of capsicums.
  • A cyclic amide; chemical formula: C18H27NO3
Example sentences
  • What was known was that certain types of nerve endings responded to capsaicin by allowing calcium ions to flow into the cell.
  • What you were up against was the awesome power of a chemical known as capsaicin, an odorless, flavorless substance present in chili peppers.
  • Although capsaicin causes respiratory problems, the researchers did not find evidence of any unique metabolites in lung microsomes.


Late 19th century: alteration of capsicine, the name of a substance formerly thought to have the same property.

Definition of capsaicin in:
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