Orssa \o-rssa, or(s)-sa\ as a girl's name is a variant of Orsa. See for origin and meaning of Orssa.
The baby name Orssa sounds like Irisa, Orasia and Ursa. Other similar baby names are Oreta, Oria, Ora, Brisa, Bryssa, Brissa, Crissa, Cressa, Oryna, Orina, Kryssa, Krissa, Odessa, Odyssa, Odissa, Olisa, Orpa, Orra, Orela, Orfea, Orfia, Orna, Orya, Orla, Orrla, Orsola, Orsel, Tressa, Tresa, Trissa, Trisa and Orsala.