prognosis

The story

1. Proto-Indo-European*per-der.?
2. Proto-Indo-European*pér
3. Proto-Indo-European*pró
4. Ancient Greekπρό (pró)
5. Ancient Greekπρο- (pro-)
6. Proto-Indo-European*ǵneh₃-
7. Proto-Indo-European*ǵneh₃tis
8. Ancient Greekγνῶσῐς (gnôsĭs)
9. Ancient Greekπρόγνωσις (prógnōsis)
10. Late Latinprognōsi
11. English todayprognosis

Learned borrowing from Late Latin prognōsis (“forecast, prediction; forecast of the course and outcome of a disease”), itself borrowed from Ancient Greek πρόγνωσις (prógnōsis, “forecast of the course and outcome of a disease; (Koine) foreknowledge, perceiving beforehand, prediction”), from προ- (pro-, prefix meaning ‘before; beforehand’) + γνῶσῐς (gnôsĭs, “inquiry, investigation; knowledge”). The plural prognoses is a learned borrowing from Late Latin prognōsēs. Cognates * Middle French prognosie (“forecast, prediction”) (modern French prognosie (obsolete), prognose (“forecast of the course and outcome of a disease”)) * Sanskrit प्रज्ञा (prajñā, “intelligence, wisdom; judgment; knowledge”)

First known use, by meaning

• from mid 17th c. A forecast of the future course or outcome of a situation based on what is presently known; a prediction.
• from mid 17th c. A forecast of the future course or outcome of a disease or disorder based on current medical knowledge.