सतयुग-त्रेता-द्वापर-कलियुग satyug-trētā-dvāpar-kaliyug

सतयुग-त्रेता-द्वापर-कलियुग satyug-trētā-dvāpar-kaliyug (sanskrit)

Satyug, Trētā, Dvāpar and Kaliyug, the golden, silver, copper and iron ages.

द्वापर dvāpar (sanskrit)

The third of the four yug or ages according to the Hindu mythology, the age of transition from good (satyug and trētā) to the age of vice (kaliyug).

कलियुग kaliyug (sanskrit)

The kali age, the iron age, the fourth and the last age of the universe according to the Hindu mythology.
(fig.) the age of vice.

सतयुग satyug (sanskrit)

The first of the four yug of the universe according to Indian mythology. Satyug is said to be the best or golden period or age of creation.

त्रेता trētā (sanskrit)

The second of the four ages according the Hindu mythology : the silver age.