The term DISCO OUTGROWTH is a combination of two words, DISCO and OUTGROWTH. DISCO is a genre of dance music that originated in the 1970s and was popularized in nightclubs and discotheques. OUTGROWTH is a noun meaning something that has grown out of or developed from something else. The crossword solution for this term is TECHNO, a genre of electronic dance music that emerged in the 1980s as an OUTGROWTH of DISCO. Techno is characterized by a repetitive four-on-the-floor beat and synthesized basslines and often incorporates elements of house music.