diagnosticate

diagnostic +‎ -ate.

diagnosticate (third-person singular simple present diagnosticates, present participle diagnosticating, simple past and past participle diagnosticated)

1. (archaic, transitive) To make a diagnosis of; to recognise (a disease or similar) by its symptoms.
   • 1895, American Association of Obstetricians and Gynecologists, Transactions (volume 7, page 98)

     Paracyesis and interstitial or cornuate fetation are purposely omitted, as such accidents can scarcely be diagnosticated […]

• diagnostication

diagnosticate

1. second-person plural present indicative of diagnosticare
2. second-person plural imperative of diagnosticare
3. feminine plural of diagnosticato