First Known Use: circa 1623
Dictionary
insomnia
noun in·som·nia \in-ˈsäm-nē-ə\
: the condition of not being able to sleep
Full Definition of INSOMNIA
: prolonged and usually abnormal inability to get enough sleep
— in·som·ni·ac \-nē-ˌak\ adjective or noun
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Origin of INSOMNIA
Latin, from insomnis sleepless, from in- + somnus sleep — more at somnolent
Related to INSOMNIA
- Synonyms
- sleeplessness, wakefulness
INSOMNIAC Defined for Kids
insomnia
noun in·som·nia \in-ˈsäm-nē-ə\
Definition of INSOMNIA for Kids
: difficulty in sleeping
Medical Dictionary
insomnia
noun in·som·nia \in-ˈsäm-nē-ə\
Medical Definition of INSOMNIA
: prolonged and usually abnormal inability to obtain adequate sleep—called also agrypnia
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