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In Indonesian, ancient temples are known as Candi; thus "Borobudur Temple" is locally known as Candi Borobudur. The term Candi is also used more loosely to describe any old structure, for example, gates and bathing structures. The origins of the name Borobudur, however, is unclear, although the unique names of most ancient Indonesian temples are no longer known. The name Borobudur was first written in Sir Thomas Raffles' book on Javan history. Raffles wrote about a monument called Borobudur, but there are no older documents suggesting the same name. The only old Javanese manuscript that hints at the monument as a holy Buddhist sanctuary is Nagarakretagama, written by Mpu Prapanca in 1365.
  The name Bore-Budur, and thus BoroBudur, is thought to have been written by Raffles in English grammar to mean the nearby region of Bore; most Candi is named after a near village. If it followed Javanese, the monument should have been named 'BudurBoro'. Raffles also suggested that 'Budur' might correspond to the modern Javanese word Buda ("ancient") – i.e., "ancient Boro". However, another archaeologist suggests the second component of the name (Budur) comes from Javanese term Buddha (mountain).
The references about the construction and inauguration of  Buddhist building — possibly refer to Borobudur — was mentioned in two inscriptions, both discovered in Kedu, Temanggung Regency. The Karangtengah inscription dated 824 mentioned vaguely about a sacred building named Jinalaya (the realm of those who have to conquer worldly desire and reach enlightenment) inaugurated by Pramodhawardhani daughter of Samaratungga. The Tri Tepusan inscription dated 842 mentioned about the sima (tax-free) lands awarded by Çri Kahulunnan (Pramodhawardhani) to ensure the funding and maintenance of a Kamulan called Bhumisambhara. Anulan itself from the word Mula which means 'the place of origin', a sacred building to honor the ancestors, probably the ancestors of the Sailendra. Caspari suggested that Bhumi Sambhara Bhudhara which in Sanskrit means "The mountain of combined virtues of the ten stages of Boddhisattvahood", was the original name of Borobudur.
source: Wikipedia. org
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