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

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

play
noun in·som·nia \in-ˈsäm-nē-ə\

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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