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[fa-stij-ee-uh m]
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noun, plural fas·tig·i·ums, fas·tig·i·a [fa-stij-ee-uh] /fæˈstɪdʒ i ə/. Medicine/Medical.
  1. the highest point of a fever or disease; the period of greatest development of an infection.
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Origin of fastigium

Borrowed into English from Latin around 1670–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for fastigium

Historical Examples

  • Fastigium: Orthoptera; the extreme point or front of vertex.

    Explanation of Terms Used in Entomology

    John. B. Smith

fastigium in Medicine


  1. The summit of the roof of the fourth ventricle of the brain.
  2. The acme or period of full development of a disease.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.