poly acoustic
The American Illustrated Medical Dictionary · 1913 · p. 20
(pol-e-ak-oos’tik) [Gr. πολύς much + ἀκουστικός relating to hearing). Increasing or intensifying sound.
Bu kavram başka kaynaklarda da geçiyor
Stedman's Medical Dictionary: A Practical Medical Dictionary (1920)
Webster's Condensed Dictionary- A Condensed Dictionary of the English Language (1909)
Chamber's Twientieth Century Dictionary (1908)
An Illustrated Dictionary of Medicine, Biology and Allied Sciences (1907)
Nuttall's Standard Dictionary of the English Language (1890)
Webster's Practical Dictionary- A Practical Dictionary of the Englih Language (1884)
Zell's Condensed Dictionary (1879)
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