Millicurie (mCi) 1 : A common unit of radioactivity. One millicurie represents radioactivity at the rate of 37 million atomic disintegrations per second, that is, 37 megabequerels
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}