Speakur

Word Pronunciation & Dictionary

iris diaphragm

Word Rarity Rare

Frequency: Zipf frequency 3.00 in modern English

Syllables
iris -di-aphragm
IPA
22
Scrabble Score
13
Letters
3
Syllables
9
Unique Chars

Meaning

noun

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.

Etymology

Derives from its action which is reminiscent of the iris of the eye.

Inflected Forms

iris diaphragms (plural)

Synonyms

iris

Questions

What does iris diaphragm mean?
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.
Where does iris diaphragm come from?
Derives from its action which is reminiscent of the iris of the eye.

How to pronounce iris diaphragm

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