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insomnia

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noun in·som·nia \in-ˈsäm-nē-ə\

Simple Definition of insomnia

  • : the condition of not being able to sleep

Full Definition of insomnia

  1. :  prolonged and usually abnormal inability to get enough sleep

in·som·ni·ac play \-nē-ˌak\ adjective or noun

Examples of insomnia

  1. <has suffered from insomnia virtually his entire life>



Origin of insomnia

Latin, from insomnis sleepless, from in- + somnus sleep — more at somnolent


First Known Use: circa 1623


Medical Dictionary

insomnia

play
noun in·som·nia \in-ˈsäm-nē-ə\

Medical Definition of insomnia

  1. :  prolonged and usually abnormal inability to obtain adequate sleep—called also agrypnia





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