septum

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Related to median septum: horizontal septum

septum

 [sep´tum] (L.)
1. a wall or partition dividing a body space or cavity. Some are membranous, some are osseous, and some are cartilaginous; each is named according to its location. See also septal defect. adj., adj sep´tal.
alveolar septum interalveolar septum.
atrial septum (septum atrio´rum cor´dis) interatrial septum.
atrioventricular septum the part of the membranous portion of the interventricular septum between the left ventricle and the right atrium.
deviated septum an injury or malformation of the nasal septum so that one part of the nasal cavity is smaller than the other; this is fairly common and seldom causes complications. Occasionally the deviation may handicap breathing, block the normal flow of mucus from the sinuses during a cold, or prevent proper drainage of infected sinuses. In some cases surgery (called partial or complete submucous resection) may be necessary to relieve the obstruction and reduce irritation and infection in the nose and sinuses.
interalveolar septum
1. one of the thin plates of bone separating the alveoli of the teeth in the mandible and maxilla. Called also interradicular septum.
2. one of the thin septa that separate adjacent pulmonary alveoli, containing connective tissue and the capillary network of the blood supply of the lung. Defs. 1 and 2 called also alveolar septum.
interatrial septum (septum interatria´le cor´dis) the partition separating the right and left atria of the heart; called also atrial septum.
interradicular septum interalveolar septum (def. 1).
interventricular septum (septum interventricula´re cor´dis) the partition separating the right and left ventricles of the heart; called also ventricular septum.
nasal septum a plate of bone and cartilage covered with mucous membrane that divides the nasal cavity.
septum lu´cidum septum pellucidum.
pellucid septum (septum pellu´cidum) the triangular double membrane separating the anterior horns of the lateral ventricles of the brain; called also septum lucidum.
septum pri´mum a septum in the embryonic heart, dividing the primitive atrium into right and left chambers. See also congenital heart defect.
rectovaginal septum the membranous partition between the rectum and vagina.
rectovesical septum a membranous partition separating the rectum from the prostate and urinary bladder.
septum of ventricles of heart (ventricular septum) (septum ventriculo´rum cor´dis) interventricular septum.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

sep·tum

, gen.

sep·ti

, pl.

sep·ta

(sep'tŭm, -tī, -tă), Avoid the incorrect plurals septi and septae.
1. A thin wall dividing two cavities or masses of softer tissue.
2. In fungi, a wall; usually a cross-wall in a hypha.
3. In nasal anatomy, the sagittal partition dividing the nasal airways, formed by the vomerine crest, quadrilateral cartilage, and perpendicular plate of the ethmoid, and covered by mucoperichondrium and mucoperiosteum.
[L. saeptum, a partition]
Farlex Partner Medical Dictionary © Farlex 2012

septum

(sĕp′təm)
n. pl. sep·ta (-tə)
A thin partition or membrane that divides two cavities or soft masses of tissue in an organism: the nasal septum; the atrial septum of the heart.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

sep·tum

, pl. septa (sep'tŭm, -tă)
1. [TA] A thin wall dividing two cavities or masses of softer tissue.
See also: transparent septum
2. In fungi, a wall; usually a cross-wall in a hypha. usage note The plural septa is sometimes mistaken for a singular form and wrongly pluralized as septae.
[L. saeptum, a partition]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

septum

Any thin dividing wall or partition within or between parts of the body.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

septum

any dividing wall or partition that occurs between structures or in a cavity.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Septum (ventricular septum)

A condition present at birth in which there is an extra fold of tissue down the center of the uterus that can cause infertility. This tissue can be removed with a wire electrode and a hysteroscope.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

sep·tum

, pl. septa (sep'tŭm, -tă) Avoid the incorrect plurals septi and septae.
1. [TA] Thin wall dividing two cavities or masses of softer tissue.
2. In nasal anatomy, sagittal partition dividing nasal airways.
[L. saeptum, a partition]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Hysterothecia gregarious, erumpent, superficial, straight, 0.21-0.56 x 0.12-0.16 mm; pseudoparaphyses hyaline, abundant, filiform, branched, longer than asci; epithecium ferrugineous to redbrown; asci cylindrical, 8-spored, 100-120 x 12-14 um; ascospores reddish brown, uniseriate to partially biseriate, muriform, not parenchymatic, with (1-2-)3 transverse and 1 longitudinal septa (?), obovoid, constricted at the median septum, lower cell conical and lighter than the upper ones, 10-14 x 4-6 [micro]m [18-20 x 8-10 [micro]m, fide Spegazzini (1912)].
Median buttress low, subrectangular, merged with a low subtriangular median septum extending anteriorly for 81-85% of valve length and with the highest point situated almost at midvalve.
5, 6): ventral view: lateral margins reaching posteriorly past median septum (Fig.
Epigynum with double hood; prominent median septum in the shape of an inverted T, septum as long as width of base, ends of base end in pockets (Fig.
Females are distinguished from the remaining Macrinus by the distally rounded median septum of the epigynum (Fig.
Median septum of epigynum comparatively wider than that of A.
The epigynum differed in that the atrium was shorter and the posterior T section of the median septum was thicker than usual (similar to Fig.
Epigynum with median septum long, straight, and narrow, but somewhat widened posteriorly; atrial sclerites large, distinct, pointed; copulatory tubes slender, curved; spermathecae bulbous, with few minute nodules.
8-10): ventral view: longitudinal part of median septum indistinct, but with distinct posterior transverse part of which the lateral ends are bent forward; no anterior hoods (Figs.
Lateral lobes of epigyne broad tongue-shaped, covering mainly posterior parts of the median septum. Anterior bands of epigynal field fragmented.
Epigynum: narrow, soft median septum between lateral plates continued as a soft basal transverse bar; median septum inverted-T shaped; posterior basal transverse bar with slightly curved lateral arms.