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delirium

[dih-leer-ee-uh m]
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noun, plural de·lir·i·ums, de·lir·i·a [dih-leer-ee-uh] /dɪˈlɪər i ə/.
  1. Pathology. a more or less temporary disorder of the mental faculties, as in fevers, disturbances of consciousness, or intoxication, characterized by restlessness, excitement, delusions, hallucinations, etc.
  2. a state of violent excitement or emotion.

Origin of delirium

1590–1600; < Latin dēlīrium frenzy, equivalent to dēlīr(āre) (see deliration) + -ium -ium
Related formssem·i·de·lir·i·um, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for semi-delirium

Historical Examples

  • And then what about your trembling, what about your bell-ringing in your illness, in semi-delirium?

    Crime and Punishment

    Fyodor Dostoevsky

  • Night after night would these attacks of semi-delirium come upon her, though in the day she seemed pretty well.

  • Fever came on, and in semi-delirium we imagined that we were taking part in a bull-fight; warring with infuriated animals.

    Glories of Spain

    Charles W. Wood


British Dictionary definitions for semi-delirium

delirium

noun plural -liriums or -liria (-ˈlɪrɪə)
  1. a state of excitement and mental confusion, often accompanied by hallucinations, caused by high fever, poisoning, brain injury, etc
  2. violent excitement or emotion; frenzy
Derived Formsdeliriant, adjective

Word Origin

C16: from Latin: madness, from dēlīrāre, literally: to swerve from a furrow, hence be crazy, from de- + līra ridge, furrow
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for semi-delirium

delirium

n.

1590s, from Latin delirium "madness," from deliriare "be crazy, rave," literally "go off the furrow," a plowing metaphor, from phrase de lire, from de "off, away" (see de-) + lira "furrow, earth thrown up between two furrows," from PIE *leis- "track, furrow."

Online Etymology Dictionary, © 2010 Douglas Harper

semi-delirium in Medicine

delirium

(dĭ-lîrē-əm)
n. pl. de•lir•i•ums
  1. A temporary state of mental confusion resulting from high fever, intoxication, shock, or other causes, and characterized by anxiety, disorientation, memory impairment, hallucinations, trembling, and incoherent speech.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.