Lord Uma Maheshwara is the combined form of Goddess Parvati and Lord Shiva. Goddess Parvati is referred as Uma, where as Lord Shiva is referred as Maheshwara. The word Uma means Light and the Goddess of Mountains in Sanskrit. The word Maheshwara means the Lord Shiva himself, or the Lord of higher order.
The Bonding and the Love between these two is legendary and depicted as the origin for the generation of this Universe. The Love and Affection of these two is also depicted in the Sanskrit Literature ‘Kumarasambhava’, written by the great Poet Kalidasa, on the occasion of describing the birth of Lord Karthikeya.
The combined form of Lord Shiva and Goddess Parvati is treated as the inseparable combination of the matter and the Energy, which implies the fact that nothing exists in this Universe without the grace of Lord Shiva and Goddess Parvati. It also signifies the strength of being together, in terms of family affairs in particular.
It is believed that those who worship Umamaheshwara will be blessed with all kinds of pleasures, which pertain to the completeness in family life. They are blessed with having no problems and hurdles in personal lives, good inflow of wealth, name and fame in profession, grant of vibrant and ecstatic family life, and so on.
There are many temple in India, where one can find the combined forms of Lord Shiva and Goddess Parvati. They not only exist in Umamaheshwara but in various other forms like Lord Mallikarjuna and Goddess Jnana Prasuna, Goddess Kanakadurga and Lord Malleswara and many more forms in various temples.