Noun atm has 3 senses
- standard atmosphere, atmosphere, atm, standard pressure - a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade
--1 is a kind of pressure unit
--1 has particulars: STP, s.t.p.
- asynchronous transfer mode, ATM - 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"
--2 is a kind of digital communication, data communication
- cash machine, cash dispenser, automated teller machine, automatic teller machine, automated teller, automatic teller, ATM - an unattended machine (outside some banks) that dispenses money when a personal coded card is used
--3 is a kind of machine
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