Ramsden eyepiece

noun
Rams·​den eyepiece | \ ˈramz-dən- How to pronounce Ramsden eyepiece (audio) \

Medical Definition of Ramsden eyepiece

: a nearly achromatic optical system that contains two plano-convex lenses with the convex surfaces facing each other and is used especially in instruments fitted with micrometer wires or a scale

Learn More about Ramsden eyepiece

Cite this Entry

“Ramsden eyepiece.” The Merriam-Webster.com Medical Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/medical/Ramsden%20eyepiece. Accessed 6 December 2019.

Comments on Ramsden eyepiece

What made you want to look up Ramsden eyepiece? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

very cautious or careful

Get Word of the Day daily email!

Test Your Vocabulary

Semantic Drift Quiz

  • a twisty river
  • Which of the following was once a synonym for fun?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!