n 1: a unit of pressure: the pressure that will support a column
of mercury 760 mm high at sea level and 0 degrees
centigrade [syn: standard atmosphere, atmosphere, {standard
pressure}]
2: a means of digital communications that is capable of very
high speeds; suitable for transmission of images or voice
or video as well as data; "ATM is used for both LAN and
WAN" [syn: asynchronous transfer mode, ATM]
3: an unattended machine (outside some banks) that dispenses
money when a personal coded card is used [syn: {cash
machine}, cash dispenser, automated teller machine, {automatic
teller machine}, automated teller, automatic teller, ATM]