Asynchronous Transfer Mode Fast Packet <communications> (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://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)