old name; former title
Refers to a previous name or title of a person, place, organization, or thing. Often used in formal or historical contexts.
東京の旧称は江戸です。
The old name for Tokyo is Edo.
この会社の旧称は山田商事でした。
The former name of this company was Yamada Trading.
Compound of 旧 (former, old) and 称 (name, title). The reading きゅうしょう is the standard on'yomi combination.