The meaning of a morpheme is a 'sememe'. The linguist assumes that each sememe is a constant and definite unit of meaning, different from all other meanings, including all other sememes, in the language, but he cannot go beyond this.
- Bloomfield (1935), a pag.162

Accordingly, the signals (linguistic forms, with morphemes as the smallest signals) consist of different combinations of the signaling-units (phonemes), and each such combination is arbitrarily assigned to some feature of the practical world (sememe).
- Bloomfield (1935), a pag.162