retroreflection

noun
ret·​ro·​re·​flec·​tion | \ˌre-trō-ri-ˈflek-shən \

Definition of retroreflection 

: the action or use of a retroreflector

Other Words from retroreflection

retroreflective \ ˌre-​trō-​ri-​ˈflek-​tiv \ adjective

First Known Use of retroreflection

circa 1965, in the meaning defined above

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The first known use of retroreflection was circa 1965

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