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

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



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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

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
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.
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