noun
- ring-shaped formations or structures; circular bands or markings
Usage: technical; biology
Examples
- The snake’s body displayed distinct annulations along its length.
- Scientists studied the annulations on the fossil to determine its age.
- The microscope revealed clear annulations in the plant stem cross-section.
- Tree rings are natural annulations that indicate years of growth.
- The geologist pointed out the mineral annulations in the rock sample.