n. (used with a sing. verb)
- The branch of theology that is concerned with defending or proving the truth of Christian doctrines.
- Formal argumentation in defense of something, such as a position or system.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.