Ramsden disc
(US Ramsden disk) Optics
noun
= Ramsden circle.
Origin
Early 20th century.
- preservation order
- preservatise
- preservative
- preservatize
- preservator
- preservatory
- preserve
- preserved lemon
- preserved pension
- preserver
- pre-service
- preserving glass
- preserving jar
- preserving sugar
- preses
- preset
- presettable
- presexual
- preshadow
- pre-shrink
- preshrinkage
- pre-shrunk
- preside
- presidency
- president