Mahadevi means “The Great Goddess”, or the Supreme Goddess,and Mahadevi is a form of Ma Shakti Devi, and her famous temple is situated in Kerala, which is popularly known as Mamanikkunnu Sri Mahadevi Temple.
In this aspect, she is considered as a goddess who contains more powers than that of the Trimurtis like Shiva, Vishnu and Brahma. As per Devi Bhagavatham, Ma Mahadevi is considered as the divine mother, who creates, protects and destroys the universe through her supreme powers. She only created all the demigods, gods and goddesses. She has given a portion of her powers to her consort Lord Shiva, and made him as a powerful deity similar to her.She is also known as Parvati, Parasakthi, Adisakthi, Durga and by various other names.
Mahadevi destroyed the powerful demons and removed the fear of the Devas and also shown her true form to them. Mahadevi is also known Brahmavidya, who contains knowledge in all the subjects. She is the goddess of wealth, knowledge and mercy, and she is the “ParaBrahmam”, and she is also mentioned as Ma Saraswati, and Ma Lakshmi in the holy texts of Hinduism.
In Hinduism, there are lot of deities, and they are called by various names and their temples are situated in different parts of India. Ma Shakti Devi is a female aspect, and similar to our biological mother, she would forgive our mistakes and would make our lives to blossom like a lotus flower. She has killed horrible demons and maintained peace and prosperity in the universe. In the Devi Mahatmya Purana, the full details about her were mentioned.
As per Devi Bhagavatham, she only took the form of Lord Narasimha and killed Hiranyakashipu, and saved the child devotee Prahalada from his father. She took the form of Varaha, and restored the mother earth from the ocean and also killed Hiranyaksha. She incarnated as Parashurama, and destroyed the ego of the kings, and maintained peace in the earth. She took the form as Vamana, and sent Mahabali to the Sutalaloka, and she also incarnated as Rama and Krishna and done many good activities.