Pralaya (
Sanskrit), in
Hindu cosmology, is an aeonic term for
Dissolution, which specifies different periods of time during which non activity situation persists, as per different formats or contexts. The word Mahapralaya stands for
Great Dissolution. During each pralaya, the lower ten realms (
loka) are destroyed, while the higher four realms, including
Satya-loka, Tapa-loka, Jana-loka, and Mahar-loka are preserved. During each Mahapralaya, all 14 realms are destroyed.