1. Diaphragm consisting of thin overlapping plates that can be adjusted to change the diameter of a central opening
   - iris

Derived forms: iris diaphragms

Type of: diaphragm, stop

Encyclopedia: Iris diaphragm

• Brinell number
• bring
• bring about
• bring around
• bring back
• bring down
• bring forth
• bring forward
• bring home
• bring home the bacon
• bring in
• bring off
• bring on
• bring oneself
• bring out
• bring outside
• bring round
• bring through
• bring to
• bring to bear
• bring together
• bring up
• bringer
• bringing
• bringing close together