Definition of bradykinin in English:


Syllabification: brad·y·kin·in
Pronunciation: /ˌbradiˈkīnin, -ˈkinin


  • A compound released in the blood in some circumstances that causes contraction of smooth muscle and dilation of blood vessels. It is a peptide comprising nine amino-acid residues.
    More example sentences
    • The peptide subfamily of GPCR contains receptors that bind a disparate array of peptides, such as angiotensin, bradykinin, opioid, somatostatin, and chemokines.
    • This class of receptors includes the angiotensin, bradykinin and vasopressin receptors.
    • Another component of the renin-angiotensin-aldosterone system is bradykinin, a vasoactive peptide metabolized by the same enzyme that converts angiotensin I to angiotensin II.


1940s: from Greek bradus 'slow' + kinēsis 'motion' + -in1.

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