The definition of a veteran is a person who has served in the military or a person who has obtained a lot of experience in a particular field.(noun)
See veteran in Webster's New World College Dictionary
Origin: L veteranus < vetus (gen. veteris), old < IE base *wet-, year > wether, Gr etos, year
See veteran in American Heritage Dictionary 4
Origin: Latin veterānus
Origin: , from vetus, veter-, old; see wet-2 in Indo-European roots.
Learn more about veteran