三省堂 さんせいどう Meanings Noun Sanseido (publisher) Kanji 三 three. Read as サン. 省 reflect. Read as セイ. 堂 hall. Read as ドウ. Words containing 三省堂 三省堂国語辞典 (さんせいどうこくごじてん) Sanseido Kokugo Jiten (Japanese dictionary published by Sanseido) Jinuma: Japanese Dictionary · Word lists