Logo
Menu
dictionary thesaurus

iris diaphragm

noun

Definition of iris diaphragm

: an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of a central opening usually to regulate the aperture of a lens

First Known Use of iris diaphragm

1867, in the meaning defined above

Keep scrolling for more

Keep scrolling for more

More Definitions for iris diaphragm

iris diaphragm

noun

Medical Definition of iris diaphragm

: an adjustable diaphragm of thin opaque plates that can be turned by a ring so as to change the diameter of a central opening usually to regulate the aperture of a lens (as in a microscope)

WORD OF THE DAY

eloquent

play

See Definitions and Examples

Get Word of the Day daily email!