re·​flec·​tor | \ ri-ˈflek-tər How to pronounce reflector (audio) \

Definition of reflector

1 : one that reflects especially : a polished surface for reflecting light or other radiation
2 : a telescope in which the principal focusing element is a mirror

Examples of reflector in a Sentence

safety devices such as bicycle reflectors Reflectors are placed along the lanes of the highway.

Recent Examples on the Web

Caltrans now places a single row of red reflectors every half mile on freeways. Gary Richards, The Mercury News, "The safest lane for freeway driving at night: Roadshow," 25 June 2019 On your seat, mount a flat repair kit, blinking red light and an LED red/orange light and reflector. Tom Stienstra,, "Tips for customizing your favorite outdoor gear," 5 June 2019 The 100-inch reflector telescope was built up there. Carolina A. Miranda,, "The Getty picks a theme for Pacific Standard Time 2024: art and science," 26 June 2019 Industry groups, which support the move, say Congress never intended to regulate candelabra, reflector bulbs and round globe bulbs as general service lamps, which will be subject to a new 45-lumen standard as of Jan. 1, 2020. Benjamin Storrow, Scientific American, "Proposed Energy Efficiency Rules Could Slow Emissions Reductions," 17 June 2019 By describing the moon as a rock of terrestrial origin, and the sun as a burning rock, Anaxagoras moved beyond earlier thinkers, even those who realized the moon was a kind of reflector. David Warmflash, Smithsonian, "An Ancient Greek Philosopher Was Exiled for Claiming the Moon Was a Rock, Not a God," 8 Oct. 2014 Traditional radio telescopes use parabolic dishes as reflectors, which gather radiation and focus it on a specific point. Daniel Oberhaus, WIRED, "New Space Telescopes Could Look Like Giant Beach Balls," 11 June 2019 Petsafe Solvit Houndabout Pet Bicycle Trailer: This model has two points of entry and a sunroof, reflectors on the wheels and cabin, a removable, washable cushion, extra wide wheel base, lower center-of-gravity and a safety leash. Nicole Forsyth, The Mercury News, "Dollars and Pets: Bike trailers for your pets," 6 June 2019 In this dishwasher, the traditional rotating lower spray arm has been replaced by an innovative reflector bar that moves from the back to the front of the dishwasher's interior during the cycle. The Good Housekeeping Institute, Good Housekeeping, "Samsung Top Control Chef Collection Dishwasher #DW80H9970US," 17 Mar. 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reflector.' 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 reflector

1665, in the meaning defined at sense 1

Keep scrolling for more

Learn More about reflector

Statistics for reflector

Last Updated

14 Jul 2019

Look-up Popularity

Time Traveler for reflector

The first known use of reflector was in 1665

See more words from the same year

Keep scrolling for more

More Definitions for reflector



English Language Learners Definition of reflector

: an object that is used to reflect light


re·​flec·​tor | \ ri-ˈflek-tər How to pronounce reflector (audio) \

Kids Definition of reflector

: a shiny surface for reflecting light or heat


re·​flec·​tor | \ ri-ˈflek-tər How to pronounce reflector (audio) \

Medical Definition of reflector

: one that reflects especially : a polished surface for reflecting light or other radiation

Keep scrolling for more

More from Merriam-Webster on reflector

Rhyming Dictionary: Words that rhyme with reflector

Spanish Central: Translation of reflector

Nglish: Translation of reflector for Spanish Speakers Encyclopedia article about reflector

Comments on reflector

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


providing supplementary assistance

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

Word Winder's CrossWinder

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

Love words? Need even more definitions?

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