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iris diaphragm. In DICTIOUS you will not only get to know all the dictionary meanings for the word
iris diaphragm, but we will also tell you about its etymology, its characteristics and you will know how to say
iris diaphragm in singular and plural. Everything you need to know about the word
iris diaphragm you have here. The definition of the word
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English
Etymology
Its action is reminiscent of the iris of the eye.
Noun
iris diaphragm (plural iris diaphragms)
- An adjustable diaphragm by which the diameter of an approximately circular opening may be controlled, as for regulating the aperture of a lens; it consists of a number of movable thin curved plates fastened at regular intervals around the inside of a ring, the positions of which are simultaneously adjusted by a single knob on the outside of the lens. It is used in cameras and microscopes.
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