An alternate symbol for the cubic centimeter (cm3). This symbol is obsolete and should not be used; cm3 should be used in its place. The cubic centimeter is the same volume as the milliliter (mL or ml)
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}