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Definition of IRIS
Pronunciation : IRIS

noun : IRIS

Source:WordNet 3.1

  • 2. (

    ) muscular diaphragm that controls the size of the pupil which in turn controls the amount of light that enters the eye; it forms the colored portion of the eye ;

  • 3. (

    ) diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening ;

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