Definify.com
Webster 1913 Edition
Precursor
Pre-cur′sor
,Noun.
One who, or that which, precedes an event, and indicates its approach; a forerunner; a harbinger.
Evil thoughts are the invisible, airy
precursors
of all the storms and tempests of the soul. Buckminster.
Syn. – Predecessor; forerunner; harbinger; messenger; omen; sign.
Webster 1828 Edition
Precursor
PRECURS'OR
,Noun.
A cloud in the southwest, in winter, is often the precursor of a snow storm. A hazy atmosphere in the west, at sunset, is often the precursor of a cloudy or of a rainy day.
Evil thoughts are the invisible, airy precursors of all the storms and tempests of the soul.