noun
endonym; autonym
Linguistic term for a name used by a group to refer to themselves or their language, as opposed to an exonym (外名) given by outsiders.
See also: 外名
「日本」は日本人が使う内名で、「Japan」は外名にあたる。
"Nihon" is the endonym used by Japanese people, while "Japan" is an exonym.