milli- [MIL i], mille-, mill-, mili-

(Latin: thousand; a decimal prefix used in the international metric system for measurements; including, thousandth, thousandths)

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.

multimillionaire
Someone with money or assets worth several millions in value.

Related "metric" families: yotta; zetta; exa; peta; tera; giga; mega; kilo; hecto; deka; deci; centi; micro; nano; pico; femto; atto; zepto; yocto.