A unit of time equal to 60 seconds or to 1/60 hour. The "SI" specifies "min" as the symbol for the time unit and ? as the symbol for the minute of arc (see below)
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}