n., pl., -mis.
A very large ocean wave caused by an underwater earthquake or volcanic eruption.
[Japanese : tsu, port + nami, wave.]
tsunamic tsu·na'mic (-mĭk) adj.
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.
