reflector

noun

re·​flec·​tor ri-ˈflek-tər 

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

By bouncing microwave signals off Earth’s surface and receiving return signals on a large radar antenna reflector, NISAR will be able to see through clouds and rain during the day and at night. —Ashley Strickland, CNN Money, 30 July 2025

Many standalone games without bases and reflectors cost from $20-$30 and can be used with your base and scanner/reflector. —Bestreviews, Mercury News, 1 Aug. 2025

The back of each trailer must have two red tail lights, two red reflectors and a white license plate light, according to the Missouri State Highway Patrol. —Eleanor Nash july 10, Kansas City Star, 10 July 2025

More generally, contemporary maps of Mars were still based on observations from telescopes like Lowell's 24-inch refractor up to Mount Palomar's 200-inch giant reflector. —Rod Pyle, Space.com, 14 July 2025

Word History

First Known Use

1665, in the meaning defined at sense 1

Rhymes for reflector

• bisector
• collector
• connector
• corrector
• defector
• deflector
• detector
• director
• dissector
• effector
• ejector
• elector

Kids Definition

reflector

noun

re·​flec·​tor ri-ˈflek-tər 

1

: one that reflects

especially : a polished surface for reflecting light or heat

2

: a telescope in which the principal light-gathering element is a mirror

Medical Definition

reflector

noun

re·​flec·​tor ri-ˈflek-tər 

: one that reflects

especially : a polished surface for reflecting light or other radiation