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

Make reflection part of your strategy Most business owners are excellent planners and poor reflectors. —Lien De Pau, Forbes.com, 30 Jan. 2026

The easiest way to keep snowplow operators in bounds is to install reflectors along your driveway's edge. —David Beaulieu, The Spruce, 28 Jan. 2026

For Dyson bubbles, meanwhile, McInnes considered a large number of low-mass reflectors deployed in a dense cloud. —Chris Young, Interesting Engineering, 28 Jan. 2026

Fishing shanties must have reflectors on each side so snowmobiles won't crash into them at dusk or during snowstorms. —Katie Wiseman, IndyStar, 27 Jan. 2026

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