Precursor definition

prĭ-kûrsər, prēkûrsər
Frequency:
A biochemical substance, such as an intermediate compound in a chain of enzymatic reactions, from which a more stable or definitive product is formed.

A precursor of insulin.

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A person or thing that goes before; forerunner; harbinger.
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One that precedes and indicates, suggests, or announces someone or something to come.

Colonial opposition to unfair taxation by the British was a precursor of the Revolution.

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Precursor is defined as something that led to the creation of something similar but new.

An example of precursor is how radio came before but helped create television.

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One that precedes another; a forerunner or predecessor.

The new principal's precursor was an eminent educator.

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A predecessor, as in office.
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A substance that precedes and is the source of another substance.
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A biochemical substance, such as an intermediate compound in a chain of enzymatic reactions, from which a more stable or definitive product is formed.

A precursor of insulin.

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The definition of a precursor is something or someone that came before.

An example of a precursor is the dark clouds before a storm.

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That which precurses, a forerunner, a predecessor, an indicator of approaching events.
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(chemistry) One of the compounds that participates in the chemical reaction that produces another compound.
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Other Word Forms

Noun

Singular:
precursor
Plural:
precursors

Origin of precursor

  • Middle English precursoure from Old French precurseur from Latin praecursor from praecursus past participle of praecurrere to run before prae- pre- currere to run kers- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin praecursor (“forerunner")

    From Wiktionary