ectoscopy

An obsolete method of diagnosis of disease of any of the internal organs by a study of movements of the abdominal wall or thorax caused by phonation. [ecto- + G. skopeo, to examine]

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ec·tos·co·py (ek-tosґko-pe) [ecto- + -scopy] a diagnostic method based on observation of chest and abdominal movements, and said to be capable of determining the outlines of the lungs and of localized internal conditions.