entrant

(noun) a commodity that enters competition with established merchandise. Example: "A well publicized entrant is the pocket computer."

(noun) any new participant in some activity. Synonyms: newcomer, fledgling, fledgeling, starter, neophyte, freshman, newbie.

(noun) someone who enters. Example: "New entrants to the country must go though immigration procedures."

(noun) one who enters a competition.