intr.v., -at·ed, -at·ing, -ates.
- To speak or write at length: expatiated on the subject until everyone was bored.
- To wander freely.
[Latin expatiārī, expatiāt- : ex-, ex- + spatiārī, to spread (from spatium, space).]
expatiation ex·pa'ti·a'tion n.
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.
