Precursor
noun /priːˈkɜː.sər/ — A person or thing that precedes and leads the way for another.
Definition
A person or thing that comes before another of the same kind — a forerunner or predecessor. In chemistry: a compound from which another compound is formed. The precursor does not become the thing that follows; it enables it.
Beyond the definition
The precursor rarely receives credit. It creates the conditions for what comes next, and is then eclipsed by what it enabled. Precursors are history's most underacknowledged figures.
Origin & history
Latin: 'praecursor' (forerunner). From 'praecurrere' (to run before). From 'prae' (before) + 'currere' (to run). The same root as 'courier' and 'current'.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
The band was widely acknowledged as the precursor to the entire movement that followed.
In chemistry, adrenaline is a precursor to certain pharmaceuticals.
The Renaissance was the precursor to the Scientific Revolution — not its cause, but its enabling condition.
How to use it
This entry uses a noun. Follow the examples for articles and singular or plural forms; not every noun takes “a” or “an.”
Choose “Precursor” when the meaning fits your context: A person or thing that comes before another of the same kind — a forerunner or predecessor. In chemistry: a compound from which another compound is formed. The precursor does not become the thing that follows; it enables it.
Synonyms
forerunner, predecessor, antecedent, harbinger
Antonyms
successor, descendant, aftermath
Related words
Precursor vs forerunner
A precursor is something that comes before another and influences its development. A forerunner is someone or something that acts as a pioneer or scout, showing that something is coming.
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Stone Griffin Statue
A weathered storybook griffin statue with moss and ivy guards a small garden bridge.
The griffin acts as a precursor to the bridge, standing as the gatekeeper that precedes the crossing and enables the transition for anyone seeking to move from one side to the other.
Image credit: Wordspun · AI-generated conceptual illustration
Questions about this word
What does "Precursor" mean?
Precursor is noun meaning: A person or thing that precedes and leads the way for another.. A person or thing that comes before another of the same kind — a forerunner or predecessor. In chemistry: a compound from which another compound is formed. The precursor does not become the thing that follows; it enables it.
Where does the word "Precursor" come from?
Latin: 'praecursor' (forerunner). From 'praecurrere' (to run before). From 'prae' (before) + 'currere' (to run). The same root as 'courier' and 'current'.