noun a first public appearance as an actor or performer the first appearance of a new product on the market verb to make a formal entrance in society or a performing art to appear on the market for the first time Which dictionary definition best reflects the precise meaning of debut as it is used in the sentence? A. noun: a first public appearance as an actor or performer B. verb: to make a formal entrance in society or a performing art C. verb: to appear on the market for the first time D. noun: the first appearance of a new product on the market