Definition of precursor in English:

precursor

Syllabification: pre·cur·sor
Pronunciation: /ˈprēˌkərsər, priˈkər-
 
/

noun

  • 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.
    Synonyms
  • 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.

Origin

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

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Pronunciation: skōSH
noun
a small amount; a little