insomniac

insomniac definition - medical

in·som·ni·ac (ĭn-sŏmˈnē-ăkˌ)

noun
One who suffers from insomnia.
adjective
Having or causing insomnia.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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