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prog·nos·tic

(prŏg-nŏstĭk)

adj.

1. Of, relating to, or useful in prognosis.

2. Of or relating to prediction; predictive.

1. A sign or symptom indicating the future course of a disease.

2. A sign of a future happening; a portent.

[Middle English pronostik, prognosticating, omen, from Medieval Latin prognōsticus, prognosticating, from Greek prognōstikos, from prognōsis, foreknowledge; see PROGNOSIS. N., from Latin prognōsticum, omen, from Greek prognōstikon, from neuter of prognōstikos.]

Indo-European & Semitic Roots Appendices

Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

Indo-European Roots

Semitic Roots

The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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