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.
Definition of METER. : the base unit of length in the International System of Units that is equal to the distance traveled by light in a vacuum in 1â299,792,458 second or to about 39.37 inches â see metric system table.efinition of METER for Kids. 1. : a planned rhythm in poetry that is usually repeated. 2. : the repeated pattern of musical beats in a measure.