aperture stop
Optics
noun
A stop that restricts the amount of light entering a lens system; a diaphragm with a circular hole that acts in this way.
Origin
Mid 19th century.
- false oxlip
- false position
- false positive
- false pregnancy
- false pretences
- false rib
- false scorpion
- false start
- false step
- false sunbird
- false teeth
- false topaz
- falsetto
- false vampire
- false widow
- false widow spider
- falsework
- falsies
- falsifiability
- falsifiable
- falsification
- falsifier
- falsify
- falsity
- Falstaffian