refractor

noun
re·​frac·​tor | \ ri-ˈfrak-tər How to pronounce refractor (audio) \

Definition of refractor

: a telescope whose principal focusing element is a lens

Examples of refractor in a Sentence

Recent Examples on the Web Van de Kamp had been using Sproul Observatory’s 61-centimeter refractor telescope to take photographic plates of Barnard’s Star. Bruce Dorminey, Forbes, 19 May 2021 Schmidt Cassegrain scopes are basically a design combining the optics of both the reflector and refractor scopes. Mike Lynch, Twin Cities, 24 Nov. 2019 There are three basic types of telescopes; reflectors, refractors, and Schmidt Cassegrain telescopes. Mike Lynch, Twin Cities, 24 Nov. 2019 Distinctive and ornate, the building’s main feature is what’s touted as the world’s largest refractor telescope — with a 40-inch lens, 63-foot tube and total weight of 20 tons. Ted Gregory, chicagotribune.com, 5 July 2018 That’s the home of the Florida’s largest publicly accessible refractor telescope, armed with a 10-inch lens. Dewayne Bevil, OrlandoSentinel.com, 3 July 2018 Roughly 12 percent were flagged as having weak vision and sent to an adjacent classroom where workers using refractor lenses conducted more tests. Andrew Jacobs, New York Times, 5 May 2018 The workshop will feature demonstrations on refractor, dobsonian, reflector and catadioptric telescopes. Rebecca Hazen, Houston Chronicle, 1 Feb. 2018 Volunteer Larry Silvestri brought two large homemade telescopes — a white light refractor and H-Alpha telescope — to the Dunes. Meredith Colias, Post-Tribune, 21 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'refractor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of refractor

1769, in the meaning defined above

Keep scrolling for more

Learn More About refractor

Time Traveler for refractor

Time Traveler

The first known use of refractor was in 1769

See more words from the same year

Dictionary Entries Near refractor

refractometer

refractor

refractory

See More Nearby Entries 

Statistics for refractor

Cite this Entry

“Refractor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/refractor. Accessed 20 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
 AlphaBear 2

Spell words. Make bears.

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!