septum(redirected from Atrial septum)
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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.
[New Latin sēptum, from Latin saeptum, partition, from neuter past participle of saepīre, to enclose, from saepēs, fence.]
n, pl -ta (-tə)
1. (Biology) biology anatomy a dividing partition between two tissues or cavities
2. (Anatomy) biology anatomy a dividing partition between two tissues or cavities
3. (Mechanical Engineering) 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]
n., pl. -ta (-tə).
a dividing wall, membrane, or the like, in a plant or animal structure; dissepiment.
[1710–20; < New Latin; Latin saeptum enclosure]
A thin wall or membrane that separates two parts, structures, or individual organisms. The chambers of the heart are separated by septa.
A wall between body cavities.
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|Noun||1.||septum - (anatomy) a dividing partition between two tissues or cavities|
partition - (anatomy) a structure that separates areas in an organism
nasal septum - a partition of bone and cartilage between the nasal cavities
|2.||septum - a partition or wall especially in an ovary|
plant organ - a functional and structural unit of a plant or fungus