Tusita

1. Tusita.-One of the palaces occupied by Konāgamana Buddha in his last lay life. Bu.xxiv.18.

2. Tusita.-The fourth of the six deva worlds (A.i.210, etc.).

Four hundred years of human life are equal to one day of the Tusita world and four thousand years, so reckoned, is the term of life of a deva born in Tusita (A.i.214; iv.261, etc.).

Sometimes Sakadāgāmins (e.g., Purāna and Isidatta) are born there (A.iii.348; v.138; also DhA.i.129; UdA.149, 277).

It is the rule for all Bodhisattas to be born in Tusita in their last life but one; then, when the time comes for the appearance of a Buddha in the world, the devas of the ten thousand world systems assemble and request the Bodhisatta to be born among men. Great rejoicings attend the acceptance of this request (A.ii.130; iv.312; DhA.i.69f; J.i.47f).

Gotama’s name, while in Tusita, was Setaketu (Sp.i.161), and the Bodhisatta Metteyya (q.v.), the future Buddha, is now living in Tusita under the name of Nathadeva.

The Tusita world is considered the most beautiful of the celestial worlds, and the pious love to be born there because of the presence of the Bodhisatta (Mhv.xxxii.72f).

Tusita is also the abode of each Bodhisatta’s parents (DhA.i.110).

The king of the Tusita world is Santusita; he excels his fellows in ten respects — beauty, span of life, etc. (A.iv.243; but see Cv.lii.47, where the Bodhisatta Metteyya is called the chief of Tusita).

Among those reborn in Tusita are also mentioned Dhammika, Anāthapindika, Mallikā, the thera Tissa (Tissa 10), Mahādhana and Dutthagāmani.

The Tusita devas are so-called because they are full of joy (tuttha-hatthāti Tusitā) (VibhA.519; NidA.109).

The inhabitants of Tusita are called Tusitā. They were present at the Mahāsamaya (D.ii.161).

Dictionary of Pali Proper Names, G P Malalasekera (1899-1973), which is available as printed version from

Tuṣita

(Sanskrit, contented; Pāli, Tusita). A heaven, home to the ‘contented gods’. A day in this world is said to be equal to 400 years of human life. This particular heaven is distinguished by being the one in which Bodhisattvas are reborn before they attain enlightenment (bodhi) in their next life as a human being. Graced by the presence of the Bodhisattva, the Tuṣita heaven is the most beautiful of all the celestial worlds. It is now said to be the residence of the Buddha-to-be, Maitreya. In Mahāyāna cultures, those of more humble aspiration would seek rebirth not in Tuṣita but in the Pure Land of Amitābha.

A Dictionary of Buddhism, Oxford University Press, 2003, 2004 (which is available in electronic version from answer.com)

Tusita: a class of heavenly beings in the sensuous plane; s. deva 

Buddhist Dictionary, Manual of Buddhist Terms and Doctrines, by NYANATILOKA MAHATHERA

1. Tuṣita [Tusita] heaven. Tuṣita is the name of the heaven of the contented. The name is derived from tuṣ which means to be satisfied. In this heaven the Bodhisattva awaits for the appropriate time to take birth as a human being before finally becoming a Buddha.

The Flower Ornament Scripture. XXIII. 497-515. Lalita-Vistara. IV. 23.

2. 都率天 [py] dōushuàitiān [wg] Tu-tsu-t'ien [ko] 도솔천 tosolch'ŏn [ja] トシュツテン tosotsuten ||| 'Tuṣita Heaven.' The fourth of the six heavens in the realm of desire where the future Buddha dwells. 

[Dictionary References] Naka996b [Credit] cmuller(entry) cwittern(py)