| prefix used together with a unit of measurement to form a multiple or a submultiple of this unit
NOTE 1 – Lists of prefixes together with their symbols are given in IEV 112-02-03 for SI prefixes and in IEV 112-01-27 for binary prefixes.
NOTE 2 – A prefix or its symbol is attached to the unit name or symbol, respectively, without any space or other sign. Example: kiloohm, kΩ. See the SI Brochure or its summary for more information.
NOTE 3 – Only one prefix is used for a base unit or a derived unit with special name. Example: 1 nm, but not 1 mµm.
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