from The Century Dictionary.
- noun A device for increasing the loudness of the sounds produced by a phonograph. See the extract.
from the GNU version of the Collaborative International Dictionary of English.
- noun obsolescent A pneumatic reproducer for a phonograph, controlled by the recording stylus on the principle of the relay. It produces much clearer and louder tones than does the ordinary vibrating disk reproducer.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun historical A
pneumatictype of sound-playback device used in the early part of the twentieth century.
from Wiktionary, Creative Commons Attribution/Share-Alike License
Formed from Ancient Greek αὐξητός (auksētos, "that can be increased") + φωνή (phōnē, "sound").
Sorry, no example sentences found.