| qualifies the name of a quantity to indicate the quotient of that quantity by the length
NOTE 1 – Examples: linear mass density, linear mass, or lineic mass; linear electric current density or linear electric current.
NOTE 2 – The qualifier “linear” is also added to the name of a quantity solely to distinguish between similar quantities (examples: linear strain, linear expansion coefficient). The qualifier “linear” has a different meaning in mathematics (see IEC 60050-102).
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