Scientology: Is it a religion or a cult?

From Dictionary.com:

Cult
1. a particular system of religious worship, esp. with reference to its rites and ceremonies.
2. an instance of great veneration of a person, ideal, or thing, esp. as manifested by a body of admirers: the physical fitness cult.
3. the object of such devotion.
4. a group or sect bound together by veneration of the same thing, person, ideal, etc.
5. Sociology. a group having a sacred ideology and a set of rites centering around their sacred symbols.
6. a religion or sect considered to be false, unorthodox, or extremist, with members often living outside of conventional society under the direction of a charismatic leader.

Religion
1. a set of beliefs concerning the cause, nature, and purpose of the universe, esp. when considered as the creation of a superhuman agency or agencies, usually involving devotional and ritual observances, and often containing a moral code governing the conduct of human affairs.
2. a specific fundamental set of beliefs and practices generally agreed upon by a number of persons or sects: the Christian religion; the Buddhist religion.
3. the body of persons adhering to a particular set of beliefs and practices: a world council of religions.
4. the life or state of a monk, nun, etc.: to enter religion.
5. the practice of religious beliefs; ritual observance of faith.
6. something one believes in and follows devotedly; a point or matter of ethics or conscience