vereringesüsteemi eri osades valitsev hüdrostaatiline rõhk, eriti vasakus vatsakeses ja suure vereringe suurtes arterites valitsev suhteliselt kõrge hüdrostaatiline rõhk, rõhk, mida veri avaldab veresoonte seintele, pressure exerted by the blood upon the walls of the blood vessels and especially arteries, usually 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, the pressure exerted by the blood on the inner walls of the arteries, being relative to the elasticity and diameter of the vessels and the force of the heartbeat