insomnia

play
noun in·som·nia \in-ˈsäm-nē-ə\

Definition of insomnia

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

insomniac

play \in-ˈsäm-nē-ˌak\ adjective or noun

Examples of insomnia in a Sentence

  1. has suffered from insomnia virtually his entire life

Recent Examples of insomnia from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'insomnia'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of insomnia

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


First Known Use: circa 1623


INSOMNIA Defined for English Language Learners

insomnia

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noun

Definition of insomnia for English Language Learners

  • : the condition of not being able to sleep


INSOMNIA Defined for Kids

insomnia

play
noun in·som·nia \in-ˈsäm-nē-ə\

Definition of insomnia for Students

  1. :  difficulty in sleeping


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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