From English atmosphere.

1. atmosphere unit of pressure

atm

1. (banking) Initialism of automated teller machine or Initialism of automatic teller machine
2. (slang, by extension) Any source of a large amount of money.
   • 2007, Alex Padilla, (Please provide the book title or journal name):

     Too often California is relegated to serving as the nation’s political ATM.

3. (computing) Initialism of w:Adobe Type Manager
4. (telecommunications, electronics) Initialism of asynchronous transfer mode
5. (transport) Initialism of active traffic management
6. (transport) Initialism of advanced traffic management
7. (transport) Initialism of air traffic management
8. (transport) Initialism of available ton mile
9. (pornography, vulgar) Initialism of ass to mouth

   Synonyms: A2M

10. (astronomy) Initialism of amateur telescope maker
11. (business) Initialism of at the market, see at-the-market offering.

• French: GAB, DAB, bancomat
• German: Geldautomat, Bankomat (Austria)
• Italian: bancomat
• Portuguese: caixa eletrônico
• Russian: банкома́т
• Spanish: cajero automático, cajero

• French: ATM
• German: ATM