phono

 
Pronunciation: /ˈfəʊnəʊ, ˈfɒnəʊ/

adjective

[usually attributive]
  • denoting a type of plug, and the corresponding socket, used with audio and video equipment, in which one conductor is cylindrical and the other is a central prong that extends beyond it: phono sockets

Origin:

1940s: abbreviation of phonograph