sep·tum | \ˈsep-təm \
plural septa\ˈsep-tə \

Definition of septum 

: a dividing wall or membrane especially between bodily spaces or masses of soft tissue — compare dissepiment

Examples of septum in a Sentence

Recent Examples on the Web

Paired with her septum ring and earrings, Erivo's brows look more like stunning pieces of jewelry than makeup. Devon Abelman, Allure, "Met Gala 2018: Cynthia Erivo Brings Bejeweled Brow Art to the Red Carpet," 7 May 2018 Interventricular septum, tricuspid valve, papillary muscles. Megan Stielstra, Longreads, "Here is My Heart," 19 Apr. 2018 Tilberg’s raven hair and septum piercing became ubiquitous in editorials, ushering in fashion’s love affair with edgy beauty. Janelle Okwodu, Vogue, "At 38, Tasha Tilberg Is Once Again the Model of the Moment," 14 Mar. 2018 In extreme cases, picking could even damage the nasal septum, which is the thin layer of cartilage separating your two nostrils, Ramakrishnan says. Markham Heid, Time, "You Asked: Is It Bad To Pick Your Nose?," 28 Feb. 2018 The hairline and the brow ridge, Deschamps-Braly felt, should be five to six centimetres apart; the eyebrows should be about sixty-five millimetres from the tip of the nose; the nasal septum should be about fifteen millimetres from the upper lip. Jane Mayer, The New Yorker, "The Story of a Trans Woman’s Face," 12 Mar. 2018 The same doesn't apply to septum piercings, though. Devon Abelman, Allure, "I Got My Septum Pierced, and It Hurt So Much More Than I Thought It Would," 16 Feb. 2018 Some chronic sinus infection causes include nasal polyps, a deviated nasal septum, allergies, and other medical conditions, according to the Mayo Clinic. Amy Marturana, SELF, "14 Sinus Infection Signs and Symptoms You Need to Know," 25 Dec. 2017 Your doctor must know how to make more space by either fixing your septum, which separates the left and right airways, or reducing the size of your turbinates, the structures on the side wall inside the nose. Carlos Wolf, miamiherald, "Could a nose job make my breathing worse?," 23 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'septum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of septum

1698, in the meaning defined above

History and Etymology for septum

New Latin, from Latin saeptum enclosure, fence, wall, from saepire to fence in, from saepes fence, hedge

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Time Traveler for septum

The first known use of septum was in 1698

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More Definitions for septum


sep·tum | \ˈsep-təm \
plural septa\-tə \

Medical Definition of septum 

: a dividing wall or membrane especially between bodily spaces or masses of soft tissue: as

a : nasal septum

b : crural septum

More from Merriam-Webster on septum Encyclopedia article about septum

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What made you want to look up septum? Please tell us where you read or heard it (including the quote, if possible).


a state of commotion or excitement

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