# diagnose

Pronunciation: US say "DY-uhg-nohs" /ˈdaɪ.əɡˌnoʊs/; UK say "DY-uhg-nohz" /ˈdʌɪ.əɡˌnəʊz/

## Verb

1. To identify which disease is causing a sick person's signs and symptoms.
   - Simple: To find out which illness is making a sick person feel unwell.
   - _Specialists can diagnose rare conditions using detailed genetic testing._
   - _The physician diagnosed pneumonia after reviewing the chest X-ray._
2. To determine the underlying cause of a problem or fault.
   - Simple: To find out what is causing a problem so it can be fixed.
   - _Technicians diagnose software faults by isolating each component in turn._
   - _She quickly diagnosed the leak as a worn seal in the pump._

## Origin

A back-formation from the noun "diagnosis."

Source: DictionaryAI, https://dictionaryai.com/define/diagnose (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).