Definition of bradykinin in English:

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Pronunciation: /ˌbradiˈkīnin/ Pronunciation: /-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.
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.

For editors and proofreaders

Syllabification: brad·y·kin·in

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