n :  pressure exerted by the blood upon the walls of the blood vessels and esp. arteries, usu. measured on the radial artery by means of a sphygmomanometer, and expressed in millimeters of mercury either as a fraction having as numerator the maximum pressure that follows systole of the left ventricle of the heart and as denominator the minimum pressure that accompanies cardiac diastole or as a whole number representing the first value only <a blood pressure of ¹²⁰/₈₀>  <a blood pressure of 120>  - abbr. BP .
 
 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.