a partition separating two chambers, such as that between the nostrils or the chambers of the heart, a dividing wall or membrane between two cavities in an organism

nasal septum, atrial septum, ventricular septum

Formal and Informal Expressions of septum

In different contexts, you can replace 'septum' with suitable alternatives. In a more formal setting, 'partition, divider' is apt. In informal speech or writing, 'wall' is a commonplace synonym.

septum: Explore its Definition & Usage

septum Definition

1a partition separating two chambers, such as that between the nostrils or the chambers of the heart
2a dividing wall or membrane between two cavities in an organism

Using septum: Examples

Take a moment to familiarize yourself with how "septum" can be used in various situations through the following examples!

Example
The septum in her nose was deviated, causing breathing problems.
Example
The heart's septum separates the left and right sides of the heart.
Example
The nasal septum divides the nasal cavity into two separate chambers.

septum Synonyms and Antonyms

Synonyms for septum

Phrases with septum

nasal septum
the partition separating the nasal cavities
Example
The doctor noticed a deviation in his nasal septum during the examination.
atrial septum
the wall that separates the two atria in the heart
Example
A hole in the atrial septum can cause blood to flow between the left and right atria.
ventricular septum
the wall that separates the two ventricles in the heart
Example
A hole in the ventricular septum can cause blood to flow between the left and right ventricles.

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Summary: septum in Brief

A 'septum' [sep-tuhm] is a partition or dividing wall between two chambers or cavities in an organism. Examples include the nasal septum, which separates the nasal cavities, and the heart's septum, which separates the left and right sides of the heart.