a telephone incorporating an external microphone and loudspeaker, allowing several people to participate in a call at the same time
WordReference Random House Unabridged Dictionary of American English © 2025
speak•er•phone
(spē′kər fōn′),USA pronunciation n.
- Telecommunicationsa telephone or telephone attachment equipped with both loudspeaker and microphone, thus permitting the instrument to be used without being held.
- (loud)speaker + (micro)phone or (tele)phone 1955–60, American.
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