2) a conventional value established by authority - as for example, the length of the meter (unit) defined by the International Prototype Meter at the International Bureau of Weights and Measures.
(2) a conventional value; established; by authority - as for example) (the length of the meter; defined; by the International Prototype Meter; L:at the International Bureau of Weights and Measures)
2) a conventional value the length of the meter
established defined
by authority - as for example
by the International Prototype Meter L:at the International Bureau of Weights and Measures