| Noun | 1. | atm - a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigradepressure unit - a unit measuring force per unit area |
| 2. | 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"data communication, digital communication - electronic transmission of information that has been encoded digitally (as for storage and processing by computers) | |
| 3. | ATM - an unattended machine (outside some banks) that dispenses money when a personal coded card is usedautomated teller, automated teller machine, automatic teller, automatic teller machine, cash dispenser, cash machine machine - any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks |