Anaclastic
Pronunciation : An`a*clas"tic
Part of Speech : a.
Etymology : [Gr.
Definition : 1. (Opt.)
Defn: Produced by the refraction of light, as seen through water; as, anaclastic curves.
2. Springing back, as the bottom of an anaclastic glass. Anaclastic glass, a glass or phial, shaped like an inverted funnel, and with a very thin convex bottom. By sucking out a little air, the bottom springs into a concave form with a smart crack; and by breathing or blowing gently into the orifice, the bottom, with a like noise, springs into its former convex form.
Source : Webster's Unabridged Dictionary, 1913