a. [ Gr. &unr_; to bend back; &unr_; back + &unr_; to bend. ] Reflecting of reflected; as, an anacamptic sound (and echo). [ 1913 Webster ]

☞ The word was formerly applied to that part of optics which treats of reflection; the same as what is now called catoptric. See Catoptrics. [ 1913 Webster ]

adv. By reflection; as, echoes are sound produced anacamptically. Hutton. [ 1913 Webster ]

n. 1. The science of reflected light, now called catoptrics. [ 1913 Webster ]

2. The science of reflected sounds. [ 1913 Webster ]