prognosis

noun

prog·​no·​sis präg-ˈnō-səs How to pronounce prognosis (audio)
plural prognoses präg-ˈnō-ˌsēz How to pronounce prognosis (audio)
Synonyms of prognosisnext
1
: the prospect of recovery as anticipated from the usual course of disease or peculiarities of the case
2

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Prognosis Is Not Just a Medical Term

With its prefix pro-, meaning "before", prognosis means basically "knowledge beforehand" of how a situation is likely to turn out. Prognosis was originally a strictly medical term, but it soon broadened to include predictions made by experts of all kinds. Thus, for example, economists are constantly offering prognoses (notice the irregular plural form) about where the economy is going, and climate scientists regularly prognosticate about how quickly the earth's atmosphere is warming.

Examples of prognosis in a Sentence

Right now, doctors say his prognosis is good. The president had a hopeful prognosis about the company's future.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
What’s the prognosis for the economy if AI turns out to be fantastic for profits and disastrous for demand? Diane Brady, Fortune, 24 Feb. 2026 What the coin’s-flip chance told the president was that no one was going to commit to a prognosis in one direction or the other. Steven Levingston, Vanity Fair, 23 Feb. 2026 The person was taken to a nearby hospital, and their prognosis is unclear. Anders Hagstrom, FOXNews.com, 23 Feb. 2026 Due to the severity of the damage and the poor prognosis for recovery, the team made the decision to humanely euthanize her. Duante Beddingfield, Freep.com, 20 Feb. 2026 See All Example Sentences for prognosis

Word History

Etymology

Late Latin, from Greek prognōsis, literally, foreknowledge, from progignōskein to know before, from pro- + gignōskein to know — more at know

First Known Use

1655, in the meaning defined at sense 1

Time Traveler
The first known use of prognosis was in 1655

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Cite this Entry

“Prognosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prognosis. Accessed 25 Feb. 2026.

Kids Definition

prognosis

noun
prog·​no·​sis präg-ˈnō-səs How to pronounce prognosis (audio)
plural prognoses -ˈnō-ˌsēz How to pronounce prognosis (audio)
1
: the prospect of recovery of an individual who has a disease based on the usual course of the disease and the characteristics of the individual who is sick
2

Medical Definition

prognosis

noun
prog·​no·​sis präg-ˈnō-səs How to pronounce prognosis (audio)
plural prognoses -ˌsēz How to pronounce prognosis (audio)
1
: the act or art of foretelling the course of a disease
2
: the prospect of survival and recovery from a disease as anticipated from the usual course of that disease or indicated by special features of the case
the prognosis is poor because of the accompanying cardiovascular diseaseP. A. Mead et al.

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