The term 'SerboCroatian' denotes a South Slavic language with several varieties. These varieties are spoken in areas that compromised the former Yugoslavia. People living in Serbia and Montenegro now usually call their language 'Serbian'. People living in Croatia now usually call their language 'Croatian'. People living in Bosnia and Hercegovina now usually call their language 'Bosnian'. The varieties of SerboCroatian, as used by educated speakers, are mutually intelligible in the same manner as the varieties of English are mutually intelligible. The dictionary is a guide for speakers of SerboCroatian who are learning English at any level, and for speakers of English who are studying SerboCraoatian at an advanced level. Professional translators have called earlier editions of this work and its companion volume 'the ultimate authority'.