A medieval unit of time equal to 1/40 hour or 1.5 minutes. This meaning has come down to us only as "a brief interval of time." The moment was divided into 12 ounces [4] of 7.5 seconds each
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}