also: エクストラ
noun
film extra; background actor
Refers to a person hired to appear in a film, TV show, or stage production in a non-speaking background role.
彼は映画のエキストラとして雇われた。
He was hired as an extra for the movie.
noun-modifying (irregular)
Prenominal use meaning something is extra, surplus, additional, or special; often used in product names or descriptions.
エクストラバージンのオリーブオイルを買った。
I bought extra virgin olive oil.