insomnia

insomnia

[in-som-nee-uh]
noun
inability to obtain sufficient sleep, especially when chronic; difficulty in falling or staying asleep; sleeplessness.

Origin:
1685–95; < Latin, equivalent to insomn(is) sleepless (in- in-3 + somn(us) sleep + -is adj. suffix) + -ia -ia

insomnious, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To insomnia
Collins
World English Dictionary
insomnia (ɪnˈsɒmnɪə)
 
n
chronic inability to fall asleep or to enjoy uninterrupted sleepRelated: agrypnotic
 
Related: agrypnotic
 
[C18: from Latin, from insomnis sleepless, from somnus sleep]
 
in'somnious
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

insomnia
1623, Anglicized as insomnie, from L. insomnia "want of sleep," from in- "not" + somnus "sleep" (see somnolence). The modern form is from 1758. Insomniac (n.) is from 1908.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

insomnia in·som·ni·a (ĭn-sŏm'nē-ə)
n.
Chronic inability to fall asleep or remain asleep for an adequate length of time.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
insomnia   (ĭn-sŏm'nē-ə)  Pronunciation Key 
Chronic inability to fall asleep or remain asleep for an adequate length of time.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary
insomnia [(in-som-nee-uh)]

A persistent and prolonged inability to sleep.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;