1. opp. - Noun
2. opp. - Adjective
opp. (not comparable)
Alternative spelling of opp (“opposite”)
opp.
Abbreviation of opuses.
Retrieved 1 December 2013 Rossiniana Mauro Giuliani (who died in 1829) wrote six sets of variations for guitar on themes by Rossini, Opp. 119–124 (c. 1820–1828). Source: Internet