verb (used with object),di·ag·nosed,di·ag·nos·ing.
to determine the identity of (a disease, illness, etc.) by a medical examination: The doctor diagnosed the illness as influenza.
to ascertain the cause or nature of (a disorder, malfunction, problem, etc.) from the symptoms: The mechanic diagnosed the trouble that caused the engine knock.
to classify or determine on the basis of scientific examination.
verb (used without object),di·ag·nosed,di·ag·nos·ing.
First recorded in 1860–65; back formation from diagnosis
Related formsdi·ag·nos·a·ble, adjectiveun·der·di·ag·nose, verb (used with object),un·der·di·ag·nosed,un·der·di·ag·nos·ing.un·di·ag·nos·a·ble, adjectiveun·di·ag·nosed, adjectivewell-di·ag·nosed, adjective
