mantra of the fire realm; mantra of Acala
In esoteric Buddhism (密教), a mantra associated with Acala (不動明王) used to burn away worldly desires and spiritual obstacles. Highly domain-specific; not used in everyday language.
In esoteric Buddhist rituals, the mantra of the fire realm is chanted to burn away worldly desires.
Esoteric Buddhism, the broader tradition in which this mantra is used.
From 火界 (fire realm) + 咒 (mantra/spell). The exact historical derivation is uncertain, but the term is a technical compound used in esoteric Buddhist texts.