Definition of "panic disorder" [panic disorder]

• A psychological disorder characterized by recurrent panic attacks and usually resulting in the development of one or more phobias, such as agoraphobia. It may or may not be associated with a specific situational trigger. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.