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 a standardized system of measurement used by scientists throughout the world. It is also the measurement system used in everyday life in most countries.nlike the English system with which you are already familiar, the metric system is based on units of ten, thus simplifying interconversions (table B.1). This base-ten system is similar to our monetary system, in which 10 cents equals a dime, 10 dimes equals a dollar, and so on.