prodrome

Probably by analogy with syndrome (pro- +‎ -drome), but consistent with Ancient Greek προδρομή (prodromḗ, “running forward, sally, skirmish”).

• (US) IPA^(key): /ˈpɹoʊˌdɹoʊm/

prodrome (plural prodromes)

1. (rare) A precursor or harbinger; also a warning event.
   • 1643, Lawrence Womack, Sober Sadness, page 45; quoted in The American encyclopædic dictionary, Volume 7, page 3252, published 1897

     These may prove the Prodromes […] to the ruin of our Monarchy.

2. An introductory or preliminary book or treatise.

   Synonym: prodromus (archaic)

3. (medicine) An early sign or symptom (or set of signs and symptoms) warning of the onset of a disease.

• prodromal
• prodromous
• prodromus

prodrome (not comparable)

1. (obsolete) Prodromous.

• prodrome on Wikipedia.Wikipedia

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prodrome m (plural prodromes)

1. prodrome

• “prodrome”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.