(ˌrɛtrəʊrɪˈflɛktɪv) adj (General Physics) of or relating to retroreflection
ret•ro•re•flec•tive
(ˌrɛ troʊ rɪˈflɛk tɪv)
adj. of or pertaining to a surface, material, or device that reflects light or other radiation back to its source; reflective. [1850–55]ret`ro•re•flec′tion,n. EncyclopediaSeeretroreflector