|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|
|a chattering or flighty, light-headed person.|
|1.||automated teller machine|
|2.||asynchronous transfer mode: used in digital communications, etc|
|3.||text messaging at the moment|
|Also: at. atmosphere (unit of pressure)|
atm or atm.
An abbreviation for automated teller machine. This is a computer terminal that takes the place of a human bank teller and allows the user to access basic bank services, such as making deposits and cash withdrawals from remote locations, twenty-four hours a day.
unit of pressure, equal to the mean atmospheric pressure at sea level. It corresponds to the pressure exerted by a vertical column of mercury (as in a barometer) 760 mm (29.9213 inches) high. One standard atmosphere, which is also referred to as one atmosphere, is equivalent to 101,325 pascals, or newtons of force per square metre (approximately 14.7 pounds per square inch). See also millibar.
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