A common unit of electric resistance equal to one million ohms. This simplified spelling of megaohm is approved by the Institute of Electrical and Electronics Engineers (IEEE)
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}