# milli (m)

Milli (m) is the prefix for one-thousandth. In decimal notation it is zero

with 3 digits behind the decimal point: 0.001, in exponential notation it is: 10exp-3 or 10hoch-3. The prefix milli, like all other mathematical prefixes, is defined in the SystÃ¨me International (SI). It is used in electronics for specifying the size of inductances or for current and voltage specifications, but also in communications engineering for specifying the wavelength of microwaves.