Origin: Latin prefix pre-
Precursor has 5 different meanings across 1 category:
a substance from which another substance is formed (especially by a metabolic reaction)
"The amino acid phenylalanine acts as a precursor to the neurotransmitter tyrosine in the brain."
a person who goes before or announces the coming of another
"The young poet was hailed as a precursor to the literary revolution that would soon sweep across the continent."
something that precedes and indicates the approach of something or someone
"The sudden drop in temperature was a clear precursor to the approaching storm."
That which precurses: a forerunner, predecessor, or indicator of approaching events.
"The sudden drop in barometric pressure was an ominous precursor to the coming storm."
In plain English: A precursor is something that happens before and leads to another event.
"The small tremors were just a precursor to the major earthquake that struck later."
Usage: Use precursor to describe an event, person, or thing that comes before and often signals something else, such as saying early symptoms are a precursor to illness. Do not confuse it with synonyms like predecessor, which refers specifically to someone who held a position previously rather than indicating future developments.
Caused by the following symbol.
"The chemical formula acts as a precursor to understanding how atoms bond together."
In plain English: A precursor is something that happens before and leads to another event.
"The early storm clouds were a precursor to heavy rain later that afternoon."
Inherited from Middle English precursour, from Middle French precurseur or its etymon Latin praecursor ("forerunner"). By surface analysis, precurse + -or.