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   brad·y·kin·in

   /ˌbrādəˈkīnən/

   noun

   • 1. 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.

   Word Origin 1940s: from Greek bradus ‘slow’ + kinēsis ‘motion’ + -in1.

   Scrabble Points: 20

   • B

     3

   • R

     1

   • A

     1

   • D

     2

   • Y

     4

   • K

     5

   • I

     1

   • N

     1

   • I

     1

   • N

     1

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