debut UK /ˈdɛbjuː/US /deɪˈbjuː/noun 4verb 2forms 6 noun4 •A performer's first performance to the public, in sport, the arts or some other area.Hulking defenceman Gudbranson, who came to Vancouver in a trade with the Florida Panthers last May, scored in his debut for the Canucks. — 2016 •[before a noun] The first public presentation of a theatrical play, motion picture, opera, musical composition, dance, or other performing arts piece.Since making its debut two years ago, the program has gained cult status.their long-anticipated debut album •The first appearance of a debutante in society. •(Philippines) The coming-of-age celebration of a woman's eighteenth birthday. verb2 •To formally introduce, as to the public.Amalgamated Software Systems debuted release 3.2 in Spring of 2004. •To make one's initial formal appearance.Release 3.2 debuted to mixed reviews in Spring of 2004. formsdebuted · débuted · debuting · débuting · debuts · débuts