Annuli

Annuli (plural of annulus) refers to a ring-shaped structure or formation, often used in biological contexts to describe circular or ring-like features. These rings can be found in various forms, from the concentric rings observed in tree cross-sections and the banded patterns in certain animals, to the segmented bodies of annelid worms. The term also extends to describe circular structures in architecture, geology, and other scientific disciplines. The significance of annuli often lies in their role in growth, function, or structural support of the subject to which they apply. The formation can be independent or a part of a larger structure or system, varying in size, shape, and material composition.

Annuli meaning with examples

• The botanist meticulously examined the tree's cross-section, identifying the annuli which provided evidence of the growth rings. Each annulus represented a year of growth, varying in width based on the environmental conditions during that period. These annuli offered a detailed record of the tree's lifespan, which served to analyze the environmental conditions that were relevant to its development.
• Microscopically, the scientist observed the annuli of the cell membrane in a sample. The concentric circles gave information about the structure of this specific cell and the way it interacted with its environment, indicating that this particular specimen might have an unusual morphology. The findings provided clues to the role of the membrane in cellular transport.
• The paleontologist studied the fossilized annuli in a certain rock formation. These annuli revealed that the rock sample used to be a part of the earth with many different types of trees or other plants with ring formations, allowing inferences about the ancient environments. The discovery offered insight into the types of plants that flourished millions of years ago.
• In the design for the new building, the architect incorporated annuli into the facade to create a unique visual effect. The ring-like structures provided both aesthetic appeal and structural integrity, creating shadows as they caught the sunlight, making the building stand out compared to other similar structures. This added a distinctive feature to the building’s architecture.
• The zoologist studied the annuli of the earthworm, which indicated that the worm's body consists of multiple segments. These annuli allowed for movement, as well as physiological functions. The segments offered flexibility and facilitated the organism's locomotion.