1. (noun) precursor
a substance from which another substance is formed (especially by a metabolic reaction)
Synonyms: harbinger, predecessor, forerunner, herald
2. (noun) precursor, forerunner
a person who goes before or announces the coming of another
Synonyms: harbinger, precursor, predecessor, forerunner, antecedent, herald
3. (noun) harbinger, forerunner, predecessor, herald, precursor
something that precedes and indicates the approach of something or someone
Synonyms: harbinger, precursor, predecessor, trumpeter, forerunner, antecedent, herald
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