also: ラジオディージェイ
noun
radio DJ; radio presenter
Refers to a person who hosts a radio program, selecting and playing music or talking between segments.
彼は深夜のラジオＤＪとして人気がある。
He is popular as a late-night radio DJ.
ラジオＤＪの軽快なトークが番組の魅力だ。
The radio DJ's lively talk is the charm of the program.