A unit of force equal to a millionth of a newton or 0.1 dyne. The unit is often used in astronautical engineering to describe the tiny forces applied to spacecraft to adjust their attitudes in space
Russ Rowlett (Director), How Many? A Dictionary of Units of Measurement, Center for Mathematics and Science Education University of North Carolina, USA 2005. http://www.unc.edu/~rowlett/units/dictA.html, (Unit of Meas and Covr Factors - Amer) {608}