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

Bicyclists, your lives are too important not to have adequate LED flashing reflectors on the back of your bikes. Dp Opinion, The Denver Post, "Letters: Can the Denver City Council clear the air? (8/18/19)," 18 Aug. 2019 Armstrong set up a pallet of 100 circular laser reflectors, designed to beam to Earth the reflections of laser beams. Houston Chronicle, "Armstrong and Aldrin Take ‘One Small Step for Man’ on the Moon," 21 July 2019 From polka dot aviators to reflector frames, retailers are getting more creative with their designs – and from all price points. Nandi Howard, Essence, "These Chic Sunglasses Are The Perfect Summer Accessory," 7 Aug. 2019 Over the next decade, new and improved reflectors will be placed in different areas on the moon to study more about the moon's interior, a glimpse into its past and help with future exploration. Ashley Strickland, CNN, "This Apollo 11 experiment is still happening on the moon," 29 July 2019 Then a small cap below the rear reflector has to be unfolded and slid into the saddle tube to secure the seat post. Thomas Ricker, The Verge, "GoCycle GX e-bike review: fast, fun, and foldable," 29 July 2019 Walkers and bicyclists should always wear reflective clothing, bright colors, and personal reflectors. Anchorage Daily News, "The Kid’s Doctor: The benefits of walking to school," 24 July 2019 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

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

8 Sep 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).


authorized for issue (as a bond)

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Name That Thing

Test your visual vocabulary with our 10-question challenge!


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!