Definition of precursor in English:


Syllabification: pre·cur·sor
Pronunciation: /prēˈkərsər


1A person or thing that comes before another of the same kind; a forerunner: a three-stringed precursor of the violin [as modifier]: precursor cells
More example sentences
  • In so doing, Coram created London's first art gallery, a precursor of the Royal Academy.
  • The pre-meal selection of chutneys is a precursor of the sharp flavours to come.
  • What appeals to me is that it's a precursor of Pinter and a follower of Coward.
1.1 Biochemistry A substance from which another is formed, especially by metabolic reaction: pepsinogen is the inactive precursor of pepsin
More example sentences
  • Plant substances make precursors of human sex hormones that can be converted in the body.
  • The plaque is an accumulation of amino acid protein precursors called A-Beta.
  • It also contains various plant steroids that serve as hormone precursors as well as vitamin B 12 and carotene.


late Middle English: from Latin praecursor, from praecurs- 'preceded', from praecurrere, from prae 'beforehand' + currere 'to run'.

Definition of precursor in: