Mahavihara
Mahavihara (Mahāvihāra) is the Sanskrit and Pali term for a great vihara (Buddhist monastery) and is used to described a monastic complex of viharas.
Mahaviharas of India
A range of monasteries grew up in ancient Magadha (modern Bihar) and Bengal. According to Tibetan sources, five great Mahaviharas stood out during the Pāla period: Vikramashila, the premier university of the era; Nalanda, past its prime but still illustrious, Somapura, Odantapurā, and Jaggadala. The five monasteries formed a network; "all of them were under state supervision" and there existed "a system of co-ordination among them . . it seems from the evidence that the different seats of Buddhist learning that functioned in eastern India under the Pāla were regarded together as forming a network, an interlinked group of institutions," and it was common for great scholars to move easily from position to position among them.
Nalanda
The famous Nalanda Mahavihara was founded a few centuries earlier; Xuanzang speaks about its magnificence and grandeur. Reference to this monastery is found in Tibetan and Chinese sources. During the Pāla period, Nālānda was less singularly outstanding, as other Pālā establishments "must have drawn away a number of learned monks from Nālānda when all of the . . came under the aegis of the Pālās." Nonetheless, the fame of this monastery lingered even after the Pala period.