Muslimin
/ˈmʊzlɪmiːn/ /ˈmʌzlɪmiːn/ /ˈmʊslɪmiːn/noun
Treated as plural. Muslims collectively.
Origin
Early 19th century (in an earlier sense). From Arabic muslimīn, oblique case plural of muslim Muslim. In form Moslemen perhaps after Mussulmen, plural of Mussulman.