An electronic voice-amplification apparatus, usually containing a set of two loudspeakers and a central control unit, used for singing, giving a speech, play-by-play commentary at events, or broadcasting in public areas like in airports, stations, stations.

(telecommunications) An IP address which changes periodically, when each time a user connects to their internet service provider.

(Internet) The use of a dynamic IP address.

A unique identifier of the form user name@domain name specifying a virtual location to which e-mail can be sent.

(networking, Internet) The protocol used to translate IP addresses into MAC addresses to support communication on a LAN.

The process of validating a cardholder's given address against the issuer's records, to determine accuracy and deter fraud. This service is provided as part of a credit card authorization for mail order/telephone order transactions. A code is returned with the authorization result that indicates the accuracy of the address match. Abbreviated: AVS.

plural of address verification service

plural of public address system

(archaic) second-person singular simple present form of address