Annuli is a term that is often used in different fields of study, such as biology, mathematics, and physics. It is a plural form of the Latin word “annulus,” which means a ring. Annuli refer to circular structures that are present in different objects, organisms, or systems. In this article, we will explore the definition and meaning of annuli, its origin, and its associations.
Definitions
In mathematics, annuli refer to the region between two concentric circles. It is a two-dimensional object that has a circular boundary. In biology, annuli are the rings that are present on the scales of fish, snakes, and other reptiles. These rings indicate the age of the organism and can be used to estimate the growth rate of the animal. In physics, annuli are used to describe the shape of a lens or a mirror.
Origin
The word “annulus” has its roots in the Latin language, where it means a ring or a circle. The term “annuli” is the plural form of “annulus” and refers to multiple rings or circles. The word has been used in different fields of study and has evolved to have different meanings and associations.
Meaning in different dictionaries
In the Oxford English Dictionary, annuli are defined as “a series of concentric rings or circular bands.” In the Merriam-Webster Dictionary, annuli are described as “a ring-shaped structure or part.” The Cambridge Dictionary defines annuli as “a series of rings or circles that are arranged one inside the other.”
Associations
Annuli are associated with different objects, organisms, and systems. In biology, annuli are associated with the scales of fish, snakes, and other reptiles. In mathematics, annuli are associated with the region between two concentric circles. In physics, annuli are associated with the shape of lenses and mirrors.
Synonyms
Some synonyms of annuli include rings, circles, bands, hoops, and loops.
Antonyms
There are no direct antonyms of annuli, but some related terms include straight lines, squares, and rectangles.
The same root words
The root word “annulus” is also present in other words such as “annular,” which means having the shape of a ring or a circular structure. Another word that has the same root is “annulment,” which means the act of canceling or invalidating something.
Example Sentences
- The fish’s age was estimated by counting the number of annuli on its scales.
- The lens had an annular shape, which helped to focus the light.
- The mathematician calculated the area of the annulus between the two circles.
- The mirror had an annular surface, which reflected the light in a specific way.
- The snake had six annuli on its scales, indicating that it was six years old.