Medical Dictionary

aperture

noun ap·er·ture
\ˈap-ə(r)-ˌch(ə)r, -chər, -ˌt(y)(ə)r\

Medical Definition of APERTURE

1
:  an opening or open space
2
:  the diameter of the stop in an optical system that determines the diameter of the bundle of rays traversing the instrument
July 04, 2015
stringent Hear it
rigorous, strict, or severe
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