incumbent. adj. 1. (often: postpositive and foll by on or upon and an infinitive) morally binding or necessary; obligatory: it is incumbent on me to attend.
Morphea, also known as localized scleroderma, is a condition which causes hardening and discoloration of the skin. It is thought to be isolated to the skin without internal organ involvement as seen in systemic sclerosis (commonly known as scleroderma).
According to the guidelines of morphology, the linguistics branch concerned with the internal structure of words, a morpheme is the very smallest meaningful linguistic unit in the grammar of a language. In writing, they are composed of graphemes, or the smallest units of typography.