Precursor

Precursor or Precursors may refer to: Precursor (religion), a forerunner, predecessor The Precursor, John the Baptist

==Science and technology== Precursor (bird), hypothesized genus of fossil birds that was composed of fossilized parts of unrelated animals Precursor (chemistry), compound that participates in the chemical reaction that produces another compound Precursor (physics), phenomenon of wave patterns caused by the dispersion of an impulse's frequency components as it propagates through a medium Precursor in the course of a disease, the state preceding a particular stage in that course Precursor cell (biology), a unipotent stem cell Earthquake precursor, phenomenon that occurs before an earthquake and allegedly -though, so far, not demonstrably- can predict the earthquake Gehrlein Precursor, a glider LNWR Precursor Class (disambiguation), classes of passenger locomotives developed for the London and North Western Railway