A reflector is a small piece of specially patterned glass or plastic which is fitted to the back of a bicycle or car or to a post beside the road, and which glows when light shines on it.
2. countable noun
A reflector is a type of telescope which uses a mirror that is shaped like a ball.
reflector in British English
(rɪˈflɛktə)
noun
1.
a person or thing that reflects
2.
a surface or object that reflects light, sound, heat, etc
3.
a small translucent red disc, strip, etc, with a reflecting backing on the rear of a road vehicle, which reflects the light of the headlights of a following vehicle
4. another name for reflecting telescope
5.
part of an aerial placed so as to increase the forward radiation of the radiator and decrease the backward radiation
reflector in American English
(rɪˈflɛktər)
noun
1.
a person or thing that reflects; esp., a surface, object, etc. that reflects light,sound, heat, or the like, as a piece of glass or metal, highly polished and usually concave, which reflects and directs radiant energy, as beams of light, sound waves, etc., in a desired direction
2.
reflecting telescope
3.
a layer of material that reflects escaping neutrons back into the core of a nuclear reactor or bomb