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Meaning & Definition of Iris in English

English

Iris

/aɪrəs/

noun

1. Plants with sword-shaped leaves and erect stalks bearing bright-colored flowers composed of three petals and three drooping sepals

synonym:
  • iris,
  • flag,
  • fleur-de-lis,
  • sword lily

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
synonym:
  • iris

3. Diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening

synonym:
  • iris,
  • iris diaphragm