precursor: význam a definice

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.

One that precedes another; a forerunner or predecessor: The new principal's precursor was an eminent educator.

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.