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Characteristic or indicative of a disease; denoting especially one or more typical symptoms, findings, or pattern of abnormalities specific for a given disease and not found in any other condition. [see pathognomy]
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pa·tho·gno·mon·ic .path-ə(g)-nō-'män-ik adj distinctively characteristic of a particular disease or condition <erosions, which are virtually \pathognomonic of GERD (Barbara Baker)>
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adj.
describing a symptom or sign that is characteristic of or unique to a particular disease. The presence of such a sign or symptom allows positive diagnosis of the disease.
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pa·thog·no·mon·ic (path″og-no-monґik) [patho- + Gr. gnōmonikos fit to give judgment] specifically distinctive or characteristic of a disease or pathologic condition; a sign or symptom on which a diagnosis can be made.Medical dictionary. 2011.