Al-Aghbari, Khalsa Hamed2008-04-102008-04-1020042008-04-10http://hdl.handle.net/1828/544This thesis examines one of the most intriguing and much studied phenomena in Semitic known as the broken plural formation. It has a twofold goal. It documents the diverse shapes of broken plurals in the Muscat dialect of Omani Arabic. Furthermore, it provides a formal analysis to the shapes and vocalism contained in these word forms within Optimality Theory framework (Prince and Smolensky 1993; McCarthy and Prince 1993a & 1993b). Following proposals by McCarthy (2000), this thesis assumes that the distinction between the singulars and broken plural shapes is better represented as 'affixed mora (p)' attached at a certain locus in broken plural forms. The analysis of the vocalism characterizing broken plural forms addresses two distinct types of fixed vocalism: phonological and specified. Fixed vocalism is demonstrated to result from an interaction between conflicting alignment and CrispEdge constraints (It6 and Mester 1999) together with *Place markedness constraints.Arabic language -- Dialects -- OmanArabic language -- Number