Pronunciation: (är"gyu-men-tā'shun), [key]
1. the process of developing or presenting an argument; reasoning.
2. discussion; debate; disputation: The lengthy argumentation tired many listeners.
3. a discussion dealing with a controversial point.
4. the setting forth of reasons together with the conclusion drawn from them.
5. the premises and conclusion so set forth.
6. argument (def. 5).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.