the·ol·o·gy 
(thē-ŏlə-jē)
(thē-ŏlə-jē)n. pl. the·ol·o·gies
1. The study of the nature of God and religious truth; rational inquiry into religious questions.
2. A system or school of opinions concerning God and religious questions: Protestant theology; Jewish theology.
3. A course of specialized religious study usually at a college or seminary.
[Middle English theologie, from Old French, from Latin theologia, from Greek theologiā : theo-, theo- + -logiā, -logy.]