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self-tuning
self-tuning adj. 
/ˌsɛlfˈtʃuːnɪŋ/,
Brit. /ˌsɛlfˈtjuːnɪŋ/
, /ˌsɛlfˈtjuːnɪŋ//ˌsɛlfˈtʃuːnɪŋ/U.S. /ˌsɛlfˈt(j)unɪŋ/
/ˌsɛlfˈt(j)unɪŋ/ΚΠ
1886 Humeston (Iowa) New Era 22 July One no-stringed, self-tuning, upright washboard.
1947 R. H. Streete in P. I. Smith Pract. Plastics xviii. 243/1 An important feature of the latest 1 kilowatt heater is that it is self-tuning and easy to operate.
2016 Daily Star (Nexis) 11 Oct. 27 Adjustable earphones include a built-in self-tuning AM/FM radio.
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