■ noun
1》 a system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals.
2》 an instrument used as part of such a system, typically including a handset with a transmitting microphone and a set of numbered buttons by which a connection can be made to another such instrument.
■ verb ring or speak to (someone) using the ~.
↘make a ~ call.
Derivatives
~r noun
telephonic adjective
telephonically adverb