Definition that contains red light
- rainbow an arc of colored light in the sky caused by refraction of the sun's rays by rain
- inflamed lighted with red light as if with flames
- ablaze lighted with red light as if with flames
- stoplight a red light on the rear of a motor vehicle that signals when the brakes are applied to slow or stop
- herschel English astronomer (born in Germany) who discovered infrared light and who catalogued the stars and discovered the planet Uranus (1738-1822)
- reddened lighted with red light as if with flames
- jaywalk cross the road at a red light
- dark-field microscope light microscope that uses scattered light to show particles too small to see with ordinary microscopes
- william herschel English astronomer (born in Germany) who discovered infrared light and who catalogued the stars and discovered the planet Uranus (1738-1822)
- running light light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow