Wiktionary
yod coalescence
alt. (context phonology English) A process in English phonology whereby the clusters (IPAchar: [dj]), (IPAchar: [tj]), (IPAchar: [sj]), and (IPAchar: [zj]) become (IPAchar: [dʒ]), (IPAchar: [tʃ]), (IPAchar: [ʃ]), and (IPAchar: [ʒ]), respectively, through mutual assimilation. n. (context phonology English) A process in English phonology whereby the clusters (IPAchar: [dj]), (IPAchar: [tj]), (IPAchar: [sj]), and (IPAchar: [zj]) become (IPAchar: [dʒ]), (IPAchar: [tʃ]), (IPAchar: [ʃ]), and (IPAchar: [ʒ]), respectively, through mutual assimilation.