[ sep-tuhm ]
/ ˈsɛp təm /
Save This Word!

noun, plural sep·ta [sep-tuh]. /ˈsɛp tə/. Biology.

a dividing wall, membrane, or the like, in a plant or animal structure; dissepiment.



Loosen up your grammar muscles because it’s time to test your knowledge on verb tenses!
Question 1 of 6
The verb tenses can be split into which 3 primary categories?

Meet Grammar Coach

Write or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing

Meet Grammar Coach

Improve Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of septum

1710–20; <Latin sēptum, variant of saeptum enclosure, noun use of neuter of saeptus (past participle of saepīre to fence); akin to saepēs hedge, fence
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use septum in a sentence

British Dictionary definitions for septum

/ (ˈsɛptəm) /

noun plural -ta (-tə)

biology anatomy a dividing partition between two tissues or cavities
a dividing partition or membrane between two cavities in a mechanical device

Word Origin for septum

C18: from Latin saeptum wall, from saepīre to enclose; related to Latin saepēs a fence
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

Medical definitions for septum

[ sĕptəm ]

n. pl. sep•ta (-tə)

A thin partition or membrane dividing two cavities or soft masses of tissue in an organism.
The septum pellucidum.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for septum

[ sĕptəm ]

Plural septa

A thin wall or membrane that separates two parts or structures in an organism. Septae separate the chambers of the heart and subdivide the hyphae of some fungi.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.