ARITH-MATIC A-3 <language> An extension of {Grace Hopper}'s {A-2} programming language, developed in about 1955. ARITH-MATIC was originally known as A-3, but was renamed by the marketing department of {Remington Rand UNIVAC}. (http://cispom.boisestate.edu/cis221emaxson/hophtm.htm). [How was A-2 extended?] (2001-01-27)