Medical Dictionary

precursor

noun pre·cur·sor \pri-ˈkər-sər, ˈprē-ˌ\

Medical Definition of PRECURSOR

1
:  one that precedes and indicates the onset of another <angina may be the precursor of a second infarction>
2
:  a substance, cell, or cellular component from which another substance, cell, or cellular component is formed especially by natural processes
July 02, 2015
apprehension Hear it
comprehension or the fear of future evil
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears