| Lemma | structural environment |
|---|---|
| Categoria grammaticale | N |
| Lingua | inglese |
| Sigla | Nida (1949) |
| Titolo | Morphology. The descriptive analysis of words |
| Sinonimi | |
| Rinvii | |
| Traduzioni | |
| Citazioni | Structural classes consists of form classes, sequence classes, and distribution classes. Form classes are determined purely by their phonological forms; sequence classes and distributional classes are determined by the identification of morphemes. In the Indo-European languages we are accustomed to a great many major structural classes, which we call 'part of speech'. |