diagnostics

1. (singular or plural in construction) The process of arriving at a diagnosis (through diagnostic efforts: tests, analysis, thought).Examples: "Near-synonym: diagnosis"; "Diagnostics is the area in which this molecule is most useful, whereas it is not a treatment target in itself."; "The diagnostics were extensive, with scores of laboratory tests."countablepluralsingularuncountable

2. (singular or plural in construction) The process of arriving at a diagnosis (through diagnostic efforts: tests, analysis, thought).Examples: "Diagnostics is the area in which the cost of hiring a factory-certified technician might easily pay for itself through downtime reduction."; "The diagnostics were a nightmare, but we finally isolated the problem to a specific one of the many ECUs — of which this ridiculous design has at least fourteen that we know of."countablepluralsingularuncountable