† polystethoscopen. [after German Polystethoskop (1879 in the passage translated in quot. 1889)] MedicineObsoleterare a type of stethoscope having several earpieces, so that more than one person can listen to the sounds produced.
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1889 H. E. Handerson tr. J. H. Baas Outl. Hist. Med. 1016 The stethoscope of Landouzy (polystethoscope) with several tubes at one end, so that several persons can listen to the same murmur at once.