Emily Dickinson Lexicon

AN-A-CAMP'TIC, a. [Gr. ανα and καμπτω, to bend.]

1. Reflecting or reflected; a word formerly applied to that part of optics which treats of reflection; the same as what is now called catoptric. [See Catoptrics.]
2. Anacamptic sounds, among the Greeks, were sounds produced by reflection, as in echoes; or such as proceeded downward from acute to grave. – Rousseau. Busby.