i
ris
Plural
irises
1
(anatomy) the round colored portion of the eye around the pupil and behind the cornea
The iris, a thin circular structure in the eye, contains pigments that give it color and helps control the amount of light that enters the eye through the pupil. It acts like a diaphragm, expanding or contracting to adjust the size of the pupil and regulate the amount of light reaching the retina. The unique pattern and color of the iris are used for identification purposes, making each person's iris distinct and individual.
- The iris is the colored part of the eye that regulates the amount of light entering the pupil.
- Iris color is determined by the amount and distribution of pigment in the iris stroma.
- The muscles within the iris contract or relax to adjust the size of the pupil in response to changes in light intensity.
- The unique patterns on the iris, known as the iris crypts and furrows, can be used for biometric identification.
- Abnormalities in the iris, such as heterochromia or anisocoria, can be indicative of underlying eye conditions or neurological disorders.
2
a plant with long narrow leaves and large yellow or purple flowers
- In the garden, the tall iris plants stood proudly, their striking purple blooms catching the sunlight.
- She planted a row of yellow iris along the edge of the pond, creating a vibrant border that reflected beautifully in the water.
- The iris flower's intricate pattern and deep purple hue made it a popular choice for floral arrangements at weddings and special events.
- Bees buzzed happily around the iris patch, drawn to the nectar-rich blooms that provided sustenance during the spring months.
- Van Gogh's famous painting "Irises" captures the essence of these elegant flowers, portraying their graceful form and vivid colors with artistic flair.
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