Other forms: reflectors
A reflector is a device that throws light back to make you seen. Rear reflector, pedal reflectors, fit a reflector.
It works by corner-cube geometry: three surfaces at right angles send light straight back the way it came, so the driver's own headlights return to the driver's own eyes. That is why a reflector is useless to anybody approaching from a different angle, and why lights matter too.
1nounreflectorA device that throws light back to make you seen.
“He fitted a red reflector to the back of his bike so drivers could see him at night.”
reflector is a safety device.
Latin
reflectō — to reflect
Old French
reflect — to bend back, turn back
English
reflect
English, today
reflector
Built from
From reflect + -or. reflect comes from Old French reflect (“to bend back, turn back”), from Latin reflectō (“to reflect”), from re- (“again”) + flectō (“to bend, to curve”). Compare English reflex.
Etymology from Wiktionary, CC BY-SA