Final answer:
ADSL stands for Asymmetric Digital Subscriber Line, a type of technology for internet connectivity that allows higher data transmission over traditional phone lines.
Step-by-step explanation:
ADSL stands for Asymmetric Digital Subscriber Line. It is a type of DSL broadband communications technology used for connecting to the Internet. ADSL allows more data to be sent over existing copper telephone lines (POTS), when compared to traditional modem lines. A notable characteristic of ADSL is that the data can move faster in the direction of the consumer than in the direction of the service provider, hence the term 'asymmetric.' This reflects the typical need for higher download speeds by the user, in contrast to upload speeds.