plural of septum. Unabridged


noun, plural septa [sep-tuh] . Biology.
a dividing wall, membrane, or the like, in a plant or animal structure; dissepiment.

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 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
septa (ˈsɛptə)
the plural of septum

septum (ˈsɛptəm)
n , pl -ta
1.  biology, anatomy a dividing partition between two tissues or cavities
2.  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]

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Word Origin & History

"partition between the nostrils," 1698, Mod.L., from L. sæptum "a fence," from neut. pp. of sæpire "to hedge in," from sæpes "hedge, fence."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

septum sep·tum (sěp'təm)
n. pl. sep·ta (-tə)

  1. A thin partition or membrane dividing two cavities or soft masses of tissue in an organism.

  2. The septum pellucidum.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
septum   (sěp'təm)  Pronunciation Key 
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
Southeastern Pennsylvania Transportation Authority
The American Heritage® Abbreviations Dictionary, Third Edition
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Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
From the cords the seminiferous tubules are developed, and between them connective-tissue septa extend.
They typically bear four-chambered nuts with thick nutshells and septa.
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