[1][2][3][4] The word "Brihada" or romanised form "Bṛhat" is an adjective which means large or great.
The information about the Brihada Vishnu Purana is found from the references of the other Hindu texts available.
According to the author Dharmanath Sharma of the text Brihadvishnupuranie Mithila Mahatmya, the information of the entire Brihad Vishnu Purana is nowhere available.
[6] It is said that only the Mithila Mahatmya part of the text Brihada Vishnu Purana is available and preserved.
[8] In the texts Ekamra-Purana and Laghubhāgavatāmṛta, the Brihada Vishnu Purana is mentioned as Brihad-Vaishnava in the list of Upaparanas.