‘Derived stems’ or ‘derivatives’, consisting of more than one morpheme: ‘secondary derived stems’, in which at least one IC is itself a stem: ‘Secondary derivatives’, in which only one IC is itself a stem; the other IC is a ‘derivational affix’.
- Hockett (1958), a pag.240

In the case of a derived stem, however, the part of speech to which it belongs can often be predicted in terms of one or another of its ICs. This is especially true in the case of forms built with derivational affixes.
- Hockett (1958), a pag.243