One that participates, shares, or takes part in some thing.
person who participates
A participator; a partaker.
a person who participates; a partaker; one having a share or part.
In Gregorian songs, the second essential tone in a mode after the mediant, lying-in the genuine modes often after that above or underneath the mediant, plus plagal modes typically in the bottom of this scale. See modulation, 3 .
a person who participates in or perhaps is skilled at some game