• synonyms


adjective Biology.
  1. of or relating to a septum.
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Origin of septal

First recorded in 1830–40; sept(um) + -al1
Related formspre·sep·tal, adjectivesu·per·sep·tal, adjectivetrans·sep·tal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for septal

Historical Examples of septal

  • In the worst forms of stenosis from septal deformity they are useless.

    A System of Operative Surgery, Volume IV (of 4)


  • These cusps are spoken of as septal, marginal and infundibular, from their position.

  • For a time there was enthusiastic cutting of septal spurs and burning of redundant mucosa and cauterizing of sensitive areas.

    The Treatment of Hay Fever

    George Frederick Laidlaw

  • The septal duct is peculiar to a few species (oocarpa, tropicalis, and less frequently Pringlei and Merkusii).

    The Genus Pinus

    George Russell Shaw

  • The internal and septal ducts appear to be confined to the species of warm-temperate or tropical countries.

    The Genus Pinus

    George Russell Shaw

British Dictionary definitions for septal


  1. of or relating to a septum
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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

septal in Medicine


  1. Of or relating to a septum or septa.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.