Dictionary.com
- the study of the arrangement and statement of religious doctrines, especially of the doctrines received in and taught by the Christian church.
Etymonline.com
1670s, from Late Latin dogmaticus, from Greek dogmatikos “pertaining to doctrines,” from dogma (genitive dogmatos) “opinion, tenet,” literally “that which one thinks is true,” from dokein “to seem good, think” (from PIE root *dek- “to take, accept”). Related: Dogmatical (c. 1600).
Discussion/Explanation
These are the official doctrines of the church.
The study of dogmatics involves these recognized doctrines and is sometimes mixed up with systematic theology. This fact is in large part because people have a tendency to use dogmatics and systematic theology interchangeably – though they are not the exact same. A key difference is whether or not there is official sanction by the church of the doctrine.
Monergist Gratia 