annulus
Произношение: [ˈæn.jʊ.ləs]
Слово
Контекст: «geometry»
(noun) an annulus is a ring-shaped object. It looks like a circle with a hole in the middle. Imagine a donut; the outer edge is one circle, and the hole is another smaller circle inside.
Пример
The playground has an annulus shape, making it perfect for playing ring toss.
Пример
The shape of the table is not an annulus; it is a solid square.
Пример
Can you draw an annulus with a big circle and a small circle inside?
Контекст: «anatomy»
(noun) in biology, an annulus can refer to a ring-like structure in some plants or animals. For example, some mushrooms have annulus shapes around their stems.
Пример
The mushroom had a beautiful annulus that looked like a tiny collar.
Пример
This type of mushroom doesn't have an annulus, so it looks very different.
Пример
What does the annulus on the mushroom tell us about its age?
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