The term 'morphology' has been taken over from biology where it is used to denote the study of the forms of plants and animals. . . . It was first used for linguistic purposes in 1859 by the German linguist August Schleicher (Salmon 2000), to refer to the study of the form of words. In present-day linguistics, the term 'morphology' refers to the study of the internal structure of words, and of the systematic form-meaning correspondences between words. .