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phrenitis

[fri-nahy-tis]
noun Pathology. (formerly)
  1. inflammation of the brain; encephalitis.
  2. delirium; frenzy.
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Origin of phrenitis

1615–25; < Late Latin phrenītis delirium, frenzy < Greek phrenîtis. See phren-, -itis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for phrenitis

phrenitis

noun rare
  1. another name for encephalitis
  2. a state of frenzy; delirium
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Derived Formsphrenitic (frɪˈnɪtɪk), adjective

Word Origin

C17: via Late Latin from Greek: delirium, from phrēn mind, diaphragm + -itis
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

phrenitis in Medicine

phrenitis

(frĭ-nītĭs)
n.
  1. Inflammation of the diaphragm.
  2. Encephalitis. No longer in technical use.
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Related formsphre•nitic (-nĭtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.