Synonyms for precursor

Noun

1. precursor, substance, matter

usage: a substance from which another substance is formed (especially by a metabolic reaction)

2. precursor, forerunner, person, individual, someone, somebody, mortal, human, soul

usage: a person who goes before or announces the coming of another

3. harbinger, forerunner, herald, precursor, indication, indicant

usage: an indication of the approach of something or someone