Front | reflection |rɪˈflɛkʃ(ə)n| |
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Back | noun 1 the throwing back by a body or surface of light, heat, or sound without absorbing it: 2 serious thought or consideration: 3 Mathematics the conceptual operation of inverting a system or event with respect to a plane, each element being transferred perpendicularly through the plane to a point the same distance the other side of it. |
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