[ prog-nos-tik ]
/ prɒgˈnɒs tɪk /


of or relating to prognosis.
predictive of something in the future: prognostic signs and symbols.


a forecast or prediction.
an omen or portent; sign.

Origin of prognostic

1375–1425; (adj.) late Middle English pronostik < Medieval Latin prognōsticus < Greek prognōstikós of foreknowledge, equivalent to pro(gi)gnṓs(kein) to know1 beforehand + -tikos -tic (see pro-2, gnostic); (noun) < Latin prognōsticon < Greek prognōstikón, neuter of prognōstikós

Related forms

prog·nos·ti·ca·ble, adjectiveprog·nos·ti·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for prognostic

British Dictionary definitions for prognostic


/ (prɒɡˈnɒstɪk) /


of, relating to, or serving as a prognosis
foretelling or predicting


med any symptom or sign used in making a prognosis
a sign or forecast of some future occurrence

Word Origin for prognostic

C15: from Old French pronostique, from Latin prognōsticum, from Greek prognōstikon, from progignōskein to know in advance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for prognostic


[ prŏg-nŏstĭk ]


Of, relating to, or useful in prognosis.
Of or relating to prediction; predictive.


A sign or symptom indicating the future course of a disease.
A sign of a future happening; a portent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.