noun
Used in sports and event contexts to refer to the start of a race, game, or performance. Often appears in compounds like スターティングメンバー (starting members).
スターティングメンバーが発表された。
The starting lineup was announced.
レースのスターティングは午後3時です。
The starting time of the race is 3 p.m.
スタート is the more common and general term for 'start', used as both a noun and a verb. スターティング is more specific to the act of starting in organized events and often appears in compound nouns.
Loanword from English 'starting', adopted into Japanese primarily in sports and event terminology.