noun
industrial fair; industrial exposition
Historical term for a government-sponsored exhibition promoting industry, common in the Meiji and Taishō periods.
明治時代、各地で勧業博覧会が開かれた。
During the Meiji period, industrial expositions were held in various places.
博覧会 is a general term for any exposition or fair, while 勧業博覧会 specifically refers to industrial promotion expositions.
Compound of 勧業 (encouragement of industry) and 博覧会 (exposition).