A nanometre.
A decimeter is ten times smaller than a meter
Nanometer
Restate the question: What unit is 10-9 of a meter?A nanometer (nm)
meter
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A decimeter is ten times smaller than a meter
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Nanometer
A decimeter
Restate the question: What unit is 10-9 of a meter?A nanometer (nm)
meter
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If you must give it a first name, it is sometimes called a 'linear' meter, but that is an unnecessary adjective. If not preceeded by 'square' or 'cubic', a meter is a linear measurement.
The distance which is 10^-3 larger is 1.003 metres, and there is no specific name for it. The name of the distance which is 10^-3 times as large (not the same thing!) is a millimetre.
That is a millimetre.
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