from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An early symptom indicating the onset of an attack or a disease.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. an early symptom warning of the onset of a disease
from the GNU version of the Collaborative International Dictionary of English
- n. A forerunner; a precursor.
- n. A premonitory symptom; a symptom or sensation experienced by a person which presages the onset of a disease or abnormal physiological event.
from The Century Dictionary and Cyclopedia
- n. A forerunner.
- n. Any prodromal symptom.
- n. A precursory or preliminary treatise; a prodromus (which see).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an early symptom that a disease is developing or that an attack is about to occur
French, from Latin prodromus, precursor, from Greek prodromos, precursor : pro-, forward; see pro-2 + dromos, running.(American Heritage® Dictionary of the English Language, Fourth Edition)
Probably by analogy with syndrome (pro- + -drome), but consistent with Ancient Greek προδρομή (prodromē, "running forward, sally, skirmish") (Wiktionary)