AC adapter
/ˌeɪˈsiː ˈædæptər/ · AC·ad·ap·ter
noun
- A device that converts alternating‑current (AC) from a wall outlet into a lower‑voltage direct‑current (DC) suitable for powering electronic equipment. I bought a new laptop, but the AC adapter was missing, so I couldn't charge it.
- A small external power supply that plugs into a wall socket to provide electricity to a portable device. The camera's AC adapter fits neatly into the wall outlet and powers the unit while I'm shooting.
Synonyms
Did you know? The slang term "wall wart" for an AC adapter comes from its bulky, wart‑like shape that sticks out of the wall socket.