Precursor (Noun)
Meaning 1
A substance from which another substance is formed (especially by a metabolic reaction).
Classification
Nouns denoting substances.
Hypernyms
Meaning 2
A person who goes before or announces the coming of another.
Classification
Nouns denoting people.
Synonyms
Hypernyms
Meaning 3
Something that precedes and indicates the approach of something or someone.
Classification
Nouns denoting communicative processes and contents.