SEPTUM • DICTIONARY ONE.COM • Definition of Septum

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noun

Septum n. (pl. septa)

A wall separating two cavities; a partition; as, the nasal septum.

(Bot.) A partition that separates the cells of a fruit.

(Zool.)

(a)

One of the radial calcareous plates of a coral.

(b)

One of the transverse partitions dividing the shell of a mollusk, or of a rhizopod, into several chambers.

(c)

One of the transverse partitions dividing the body cavity of an annelid.

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Etymology of 'Septum'

Collaborative International Dictionary of English 0.48

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"Septum" Quotes from Famous Books

... of headache is nasal obstruction, such as may be due to adenoids or deformities of the septum, or chronic catarrhal conditions. These probably act by their interference with breathing and consequent imperfect ventilation of the blood, as well as by obstruction and inflammation of the great air-spaces in the bones of the skull, closely underlying ...

— Preventable Diseases • Woods Hutchinson

... arranged in horizontal rows, and it is by means of these hooks that the animal attaches itself to the tissues of its host. The hooks may be of two or three shapes. Like the body, the proboscis is hollow, and its cavity is separated from the body cavity by a septum or proboscis sheath. Traversing the cavity of the proboscis are muscle-strands inserted into the tip of the proboscis at one end and into the septum at the other. Their contraction causes the proboscis to be invaginated into its cavity (fig. 2). But the whole proboscis ...

— Project Gutenberg Encyclopedia

... but, so far as it goes, accurate, diagram of the structure of the heart and the course of the blood. The heart is supposed to be divided into two portions. It would be possible, by very careful dissection, to split the heart down the middle of a partition, or so-called 'septum', which exists in it, and to divide it into the two portions which you see here represented; in which case we should have a left heart and a right heart, quite distinct from one another. You will observe that there is a portion of ...

— William Harvey And The Discovery Of The Circulation Of The Blood • Thomas H. Huxley

... Basongo; their color is generally dirty black, foreheads low and compressed, noses flat and much expanded laterally, though this is partly owing to the alae spreading over the cheeks, by the custom of inserting bits of sticks or reeds in the septum; their teeth are deformed by being filed to points; their lips are large. They make a nearer approach to a general negro appearance than any tribes I met; but I did not notice this on my way down. They cultivate pretty largely, and rely ...

— Missionary Travels and Researches in South Africa - Journeys and Researches in South Africa • David Livingstone

Words linked to "Septum" : deviated nasal septum, anatomy, plant organ, partition, nasal septum, septal, general anatomy, deviated septum