the GNU version of the Collaborative International Dictionary of English
n. Interchange of speech; dialogue; conversation; conference.
n. An intermediate act or decree before final decision.
n. Hence, intermediate argument or discussion.
The Century Dictionary and Cyclopedia
n. Interchange of speech; alternation in speaking; dialogue.
n. Intermediate discussion or argument; in law, an intermediate act or decree before final decision.
Word Usage
"And if the interlocution is dependent on some or all of that baggage then it's in the baggage that we should be looking for tests -- or, more to the point, for clearer definitions of what it is we're testing for."