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.
The metric system is based on units of 10, with standard prefixes attached to the basic unit of measurement. In this case, the basic unit is the meter. The prefix milli- means one thousandth, centi- means one hundredth, deci- means one tenth and kilo- means one thousand.