Dictionary.com
definitions
  • synonyms

delirium

[dih-leer-ee-uh m]
See more synonyms for delirium on Thesaurus.com
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.
Show More

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
Show More
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."

Show More
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.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.