Talk:Precursor Mine/@comment-33541794-20171101225759/@comment-37374453-20190828185752

pre·cur·sor

/prēˈkərsər/

noun
 * 1) a person or thing that comes before another of the same kind; a forerunner.

"a three-stringed precursor of the violin"


 * 1) *a substance from which another is formed, especially by metabolic reaction.

"pepsinogen is the inactive precursor of pepsin"