S> (ATM, or "faSt packet") A method for the dynamic allocation of bandwidth uSing a fixed-Size packet (called a cell). See alSo ATM Forum, Wideband ATM. {ATM acronymS (http://www.atmforum.com/atmforum/acronym_index.html)}. {Indiana acronymS (http://cell-relay.indiana.edu/cell-relay/FAQ/ATM-AcronymS.html)}. [More detail? Data rate(S)?] (1996-04-01)