diagnosis

Where does the word "diagnosis" come from? It comes from Greek diagnosis, and was adopted directly into English (1600s).

Diagnosis’s story begins in Greek: diagnosis meant “a distinguishing, discernment.” Literally a knowing apart, distinguishing one thing from another. It reached English by 1600s as diagnosis. Greek 'distinguishing', from 'dia-', apart, plus 'gnōsis', knowledge. Today, diagnosis means the identification of the nature of an illness or problem.

1. Stage 1 · Greek · ancient diagnosis "a distinguishing, discernment", literally a knowing apart, distinguishing one thing from another.
2. Stage 2 · English · 1600s diagnosis "identification of the nature of an illness", Greek 'distinguishing', from 'dia-', apart, plus 'gnōsis', knowledge.