三伏天 Traditional form: 三伏天 Pinyin (reading): sānfútiān Definitions: see 三伏 (sānfú) Characters: 三 - three 伏 - to crouch, to crawl, to lie hidden, to conceal 天 - sky, heaven; god, celestial Traditional characters: 三 - three 伏 - to crouch, to crawl, to lie hidden, to conceal 天 - sky, heaven; god, celestial