Adstratum

接加层

A term sometimes used in sociolinguistics, referring to features in a language which have resulted from contact with a neighbouring language. The process of convergence may lead to the development of a linguistic area. Adstratal features contrast with those found in the substratum and superstratum.

有时用于社会语言学，指一种语言跟一种相邻语言接触后产生的一些特征。语言的会聚过程会逐渐形成一个语言地域。这个术语跟下位层和上位层相对。