|  | 
Definition of Asynchronous transfer mode
1. Noun. 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" 
|  | 
1. Noun. 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"