1) A person or thing that comes before another of the same kind;
M.E., from L. prÃ¦cursor "forerunner," from prÃ¦cursus, p.p. of prÃ¦currere, from prÃ¦- "before," → pre-, + currere "to run," → current.
PišgÃ¢m, from piš- "before," → pre-, + gÃ¢m "step, pace," → stage.
Fr.: pulse précurseur
A component of a → pulsar pulse that appears shortly in advance of the main pulse.