万ばん国こく博はく覧らん会かいばんこくはくらんかいFreq.FrequencyTop 100,000Meanings1nounworld exposition; international exposition; world's fairFormal term for a large international exhibition; often abbreviated to 万博 (ばんぱく) in everyday usage.2025年ねんの万ばん国こく博はく覧らん会かいは大おお阪さかで