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septal

[sep-tl]
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adjective Biology.
  1. of or relating to a septum.

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
British Dictionary definitions for preseptal

septal

adjective
  1. of or relating to a septum
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

preseptal in Medicine

septal

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