telecoiln.
/ˈtɛlᵻkɔɪl/, U.S. /ˈtɛləˌkɔɪl/ A coil of wire in a hearing aid or cochlear implant that receives electromagnetic signals generated by audio induction loops for conversion into sound.
ΚΠ
1959 Lawrence (Kansas) Daily Jrnl.-World 28 Aug. 5/1 (advt.) There is only one ‘Target Hearing’ device which includes the Tele-Coil that, with the flick of a switch, gives you the same effect as putting you into a private, ‘sound-proof phone booth’ when you use the phone.
1975 Music Educators Jrnl. Sept. 98/2 The sound from the stage is picked up by the amplifier, fed into the loop, and then sent out of the loop like a radio signal. The tele-coil in a hearing aid receives the signal only.
2011 B. Taylor & H. G. Mueller Fitting & dispensing Hearing Aids viii. 207/2 With a properly functioning telecoil (or t-coil as some refer to it as), patients can take advantage of ‘looped rooms’ by switching the regular microphone setting over to the telecoil setting.
This entry has been updated (OED Third Edition, December 2016; most recently modified version published online March 2022).
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n.1959