Annulus
noun
A ring-shaped object or region, especially one bounded by two concentric circles.
The area between the two circles is called an annulus.
Usage tips
Neutral
concentric annulus, circular annulus, annulus of light
noun
A ring-like structure present in certain biological systems, such as the layers found in some seeds.
The annulus of the seed helps in the distribution of nutrients.
Usage tips
Formal
seed annulus, annular growth, annular region
noun
The term 'annulus' can also refer to a specific area in sports contexts, notably in the game of darts.
The dart must land in the annulus to score points.
Usage tips
Neutral
dart annulus, scoring annulus, board annulus
noun
A ring-shaped object or region, especially one bounded by two concentric circles.
The area between the two circles is called an annulus.
Usage tips
Neutral
concentric annulus, circular annulus, annulus of light
noun
A ring-like structure present in certain biological systems, such as the layers found in some seeds.
The annulus of the seed helps in the distribution of nutrients.
Usage tips
Formal
seed annulus, annular growth, annular region
noun
The term 'annulus' can also refer to a specific area in sports contexts, notably in the game of darts.
The dart must land in the annulus to score points.
Usage tips
Neutral
dart annulus, scoring annulus, board annulus
Definition 1 of 3
Pro Tip 1/3Geometry
Understanding shapes is crucial in geometry.
An annulus is a fundamental shape in many mathematical formulas.
Pro Tip 2/3Biology
In biology, this shape can refer to anatomical structures like blood vessels.
An annulus forms around certain organs as protective layers.
Pro Tip 3/3Contextual Usage
Be careful using 'annulus' outside scientific contexts.
Using 'ring' might be clearer for general audiences.
Pro Tip 1/3Geometry
Understanding shapes is crucial in geometry.
An annulus is a fundamental shape in many mathematical formulas.
Pro Tip 2/3Biology
In biology, this shape can refer to anatomical structures like blood vessels.
An annulus forms around certain organs as protective layers.
Pro Tip 3/3Contextual Usage
Be careful using 'annulus' outside scientific contexts.
Using 'ring' might be clearer for general audiences.
Pro Tip 1/3Geometry
Understanding shapes is crucial in geometry.
An annulus is a fundamental shape in many mathematical formulas.
Pro Tip 2/3Biology
In biology, this shape can refer to anatomical structures like blood vessels.
An annulus forms around certain organs as protective layers.
Pro Tip 3/3Contextual Usage
Be careful using 'annulus' outside scientific contexts.
Using 'ring' might be clearer for general audiences.
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