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dyssomnia

dyssomnia definition - medical

dys·som·ni·a (dĭs-sŏmˈnē-ə)

noun

A disturbance in the normal rhythm or pattern of sleep.

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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