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retroreflector

[re-troh-ri-flek-ter]
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noun
  1. See under retroreflective.
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Origin of retroreflector

First recorded in 1945–50; retro- + reflector

retroreflective

[re-troh-ri-flek-tiv]
adjective
  1. of or relating to a surface, material, or device (retroreflector) that reflects light or other radiation back to its source; reflective.
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Origin of retroreflective

First recorded in 1850–55; retro- + reflective
Related formsret·ro·re·flec·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018