Abstract
This paper reconstructs *Ratəd in Proto-Atayalic subgroup of Austronesian language family, which is a cultural lexicon meaning “a section of arable land,” on the basis of present-day forms in Atayal and Seediq such as atu (Atayal), ratuc (Paran Seediq), and gasut (Truku Seediq). The cognate relationship between these words are opaque due to innovative phonological changes that occurred in each language as well as in each dialect. This paper traces these phonological changes that leads to the proto-form.
