H. P. Blavatsky

Mahâ Pralaya. The opposite of Mahâmanvantara, literally “the great Dissolution”, the “Night” following the “Day of Brahmâ”. It is the great rest and sleep of all nature after a period of active manifestation; orthodox Christians would refer to it as the “Destruction of the World”.

Source: H. P. Blavatsky, The Theosophical Glossary, art. Maha Pralaya