A binary prefix meaning 240 = 1 099 511 627 776. This prefix, adopted by the International Electrotechnical Commission in 1998, replaces tera- for binary applications in computer science. The prefix is a contraction of "terabinary."
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}