Word Origin and History for betamax
1975, proprietary name (Sony), from Japanese beta-beta "all over" + max, from English maximum.
Online Etymology Dictionary, © 2010 Douglas Harper
Examples from the Web for betamax
If you answered nine or more, you may have won a SONY Betamax and an eight-track operating system.The World’s Toughest Political Quiz
December 31, 2014