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Laën·nec(lā-nĕk′, lə-), René Théophile Hyacinthe 1781-1826.
French physician who invented the stethoscope as an aid to auscultation, a technique on which he wrote a classic work.
(Biography) René Théophile Hyacinthe (rəne teɔfil jasɛ̃t). 1781–1826, French physician, who invented the stethoscope