Quotes:Maha Manvantara
H. P. Blavatsky
Mahâ Manvantara. Lit., the great interludes between the “Manus”. The period of universal activity. Manvantara implying here simply a period of activity, as opposed to Pralaya, or rest — without reference to the length of the cycle.
Source: H. P. Blavatsky, The Theosophical Glossary, art. Maha Manvantara