This entry is concerned with how linguistic theory has been applied in translation studies. In some cases, scholars have sought to explain translation using an existing, more or less complete linguistic theory. In other cases, linguistically informed commentators have drawn on an often eclectic range of sources to elucidate aspects of the relationship between a given source language (SL) and target language (TL), or source and target text, or to highlight features of source texts that may have to be attended to in translation. Linguistic theory has also informed discussions of how translated texts can differ from other texts in the same (target) language, and of how decisions made by translators can impact on relations, including power relations, between addressor and addressee.