抄録
The aim of this paper is to discuss the invisibility of the moraic nasal in Japanese by investigating the phonological factors that yield the unaccented pattern in medical terms. Firstly, I demonstrate that the unaccented pattern in medical terms that end in CiN# sequence occurs in phonologically predictable contexts. Secondly, I argue that the emergence of the unaccented pattern in medical terms has to do with the invisibility of the moraic nasal in word-final position. Lastly, I analyze the motivation for the invisibility of the moraic nasal by examining the literature on the phonetic property of the moraic nasal and the weight neutralization in word-final position in Japanese.