0 a tall plant that has blue, yellow, or white flowers and long, narrow leaves --
1 the coloured circular part of that eye that surrounds the black pupil (= central part) --
2 a tall plant with large, colorful, often yellow or purple flowers and long pointed leaves --
3 the colored, circular part of an eye surrounding the black pupil (= central part): --
The irises of the eyes are distinctly silver.
Most fish are unable to regulate the amount of light that enters the eye since they have irises that can not change size.
However, it will be a major challenge to duplicate the irises of people's eyes, or all three biometric identifiers.
The most useful techniques include recognition of fingerprints, faces, voices, iris patterns, hand geometry and signatures.
With the application of mode converter, the parallelism or the perpendicularity of the electrical field to iris planes can be easily realized.
Due to the wide pressure range the light intensity had to be attenuated by a remote controlled iris 1.4-16.
The leaves of this tree are rather common fossils, striped with longitudinal veins that give it a superficial resemblance to the leaf of an iris.
I have been in my house like an iris in an eye with the eyelid shut.
