- Rhymes: -uːmi
- (Japanese mythology, Shinto) A brother of Amaterasu, Tsukuyomi, Susanoo and Kagutsuchi, and an important kami in charge of the mountains and the sea. Sometimes also viewed as in charge of sake brewing and war.
2008, Susan Zitterbart, Kumano Mandara: Portraits, Power, and Lineage in Medieval Japan, page 29:
- When Saichō (767-822) established Enryakuji on Mount Hiei as his Tendai center he adopted the already enshrined kami of the cultic site, Ōmiwa Myōjin and Ōyamatsumi, as tutelary deities of the monastic center.
2009, Herman Ooms, Imperial Politics and Symbolics in Ancient Japan, University of Hawaiʻi Press, page 41:
- […] , and ritually they create the world and beget Amaterasu, Susanoo, and Ōyamatsumi.
Japanese sea and mountain god
- Rōmaji transcription of