co·a·lesce /ˌkəʊəˈles $ ˌkoʊ-/ verb [intransitiveI] formalUNITEif objects or ideas coalesce, they combine to form one single group 聯合,合並 SYN fusecoalesce into/withGradually the different groups of people coalesced into one dominant racial group. 不同種群的人逐漸融合,成爲一個主要的種族群體。
—coalescence noun [uncountableU]