| milli- [MIL i], mille-, mill-, mili- (Latin: thousand; a decimal prefix used in the international metric system for measurements).In the metric [decimal] system, milli- denotes 1/1 000 of a unit, thousandth [U.S.] and thousandth part [U.K.]; 10-3 [0.001] The metric symbol for milli- is m.mile: millefiori: millenary: millennial: Millennium: millennium: millepede: millesimal: milliampere: milliard: millibar: millicurie: millienarian: millienarianism: millifarad: milligram: milliliter: millilitre: millimeter: millimetre: milliohm: million: millionaire: millipede: millirad: milliroentgen: millisecond: millivolt: milliwatt: |