Etymologically

πρόγνωσις

Etymology and origin of the Ancient Greek word πρόγνωσις

Confidence
Established
Formation
Derivation
First attested
400s BC Hippocratic Corpus More words from the 5th century BC
Ultimate origin
Ancient Greek γιγνώσκω
Etymology tree
inherited borrowed derived
Ancient Greek γνῶσις (gnôsis)
English gnosis
Ancient Greek πρόγνωσις (prógnōsis)
Latin prognōsis
English prognosis
From the same root
Ancient Greek γνωστικός (gnōstikós) ← γνῶσις

Pronunciation

  • 5th-century BC Attic: /pró.ɡnɔː.sis/[1]
  • 4th-century AD Koine: /ˈpro.ɣno.sis/[1]
  • 10th-century Byzantine: /ˈpro.ɣno.sis/[1]

Forms

πρόγνωσῐς (prógnōsis) f (genitive προγνώσεως); third declension[1]

Etymology

It is formed from Ancient Greek προ- (pro-, “before”) + γνῶσις (gnôsis, “knowledge”).[1] Bailly and Babiniotis derive it from the verb προγιγνώσκω (progignṓskō, “to know beforehand”), made of the same prefix and γιγνώσκω (gignṓskō, “to come to know”).[2][3]

Earliest recorded meaning

Its earliest texts are medical: the Hippocratic treatises use it for the physician's forecast of how a disease will run, and one Hippocratic work bears the title Coan Prenotions (Κῳακαὶ προγνώσεις).[4][5][3]

Semantic evolution

Outside medicine the word meant perceiving or knowing something beforehand: Plutarch and Lucian use it of foresight and prediction, and the astronomer Geminus of forecasting.[5][2] In the Septuagint (Judith) and the New Testament it is God's foreknowledge; in Acts and 1 Peter it comes close to predetermination, God's intention fixed in advance.[6][7][8]

The medical sense passed through Late Latin into English as prognosis in the 17th century.[9] Medieval vernacular Greek kept the word, and it lives on as the learned Modern Greek πρόγνωση (prógnosi), used for diseases and for forecasts in general.[10][11][3]

Timeline

  • 5th century BC – The Hippocratic Corpus uses it for the forecast of a disease's course.[4][5][12]
  • 2nd century BC – The Book of Judith in the Septuagint uses it for God's foreknowledge.[4][6]
  • 1st century BC – Geminus uses it for prediction in astronomy.[5][12]
  • 1st century AD – The New Testament uses it for God's foreknowledge and predetermination.[7][5]
  • 1st–2nd century AD – Plutarch uses it for perceiving something beforehand.[5][12]
  • 2nd century AD – Galen cites the Hippocratic works on prognosis.[5][12]
  • 1650s – English borrows the medical term as prognosis through Late Latin.[9]
  • Modern Greek – The learned πρόγνωση (prógnosi) is used of diseases and of forecasts.[11][3]

Meanings

Noun

  1. (medicine) The prognosis of a disease, a forecast of its course.[5][2]
  2. Perceiving or knowing beforehand; foresight.[5][13]
  3. Prediction, forecast.[5][13]
  4. (Koine) The foreknowledge of God; in the New Testament also his predetermination.[5][7][8]

Word family

  • προγνωστικός (prognōstikós)
  • προγιγνώσκω (progignṓskō)
  • English prognosis

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Bailly, Anatole (2020), Dictionnaire grec-français, Bailly 2020 Hugo Chávez ed., ed. Gérard Gréco et al.
  3. ^ a b c d Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  4. ^ a b c Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  5. ^ a b c d e f g h i j k Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  6. ^ a b Lust, Johan; Eynikel, Erik; Hauspie, Katrin (2003), Greek-English Lexicon of the Septuagint, rev. ed., Stuttgart: Deutsche Bibelgesellschaft
  7. ^ a b c Bauer, Walter; Danker, Frederick W., et al. (2000), A Greek-English Lexicon of the New Testament and Other Early Christian Literature, 3rd ed., Chicago: University of Chicago Press
  8. ^ a b Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  9. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  10. ^ Kriaras, Emmanuel, Επιτομή του Λεξικού της μεσαιωνικής ελληνικής δημώδους γραμματείας 1100–1669, Κέντρο Ελληνικής Γλώσσας, https://www.greek-language.gr
  11. ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
  12. ^ a b c d Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
  13. ^ a b Korinthios, J. (2025), Grande Dizionario Greco Classico: Greco–Italiano, digital ed., Milan: Hoepli
Cite this entry

“Πρόγνωσις.” Etymologically, 8 Nov. 2026, etymologically.com/grc/%CF%80%CF%81%CF%8C%CE%B3%CE%BD%CF%89%CF%83%CE%B9%CF%82. Accessed 8 Nov. 2026.

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