Annulus

usgb/ˈæn.jə.ləs/
noun

A ring-shaped object or region, especially one bounded by two concentric circles.

The area between the two circles is called an annulus.
Visual representation of "annulus" - A ring-shaped object or region, especially one bounded by two concentric circles.

Usage tips

Neutral

concentric annulus, circular annulus, annulus of light

Definition 1 of 3
Visual representation of "annulus"
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Geometry

Understanding shapes is crucial in geometry.

Illustration for Geometry
An annulus is a fundamental shape in many mathematical formulas.
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Biology

In biology, this shape can refer to anatomical structures like blood vessels.

Illustration for Biology
An annulus forms around certain organs as protective layers.
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Contextual Usage

Be careful using 'annulus' outside scientific contexts.

Illustration for Contextual Usage
Using 'ring' might be clearer for general audiences.
Visual representation of the word "Annulus"

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