Hypertension, or high blood pressure, is a condition in which blood-pressure at rest is higher than the body's needs. Because hypertension lacks overt symptoms, high blood pressure can go unnoticed for years.
2. metric-a decimal unit of measurement of the metric system (based on meters and kilograms and seconds); convert all the measurements to metric units; it is easier to work in metric. metric unit.
adj. 1. (Units) of or relating to the metre or metric system. 2. (Mathematics) maths denoting or relating to a set containing pairs of points for each of which a non-negative real number Ï(x, y) (the distance) can be defined, satisfying specific conditions.