D defs.my
Entry 2 senses Webster, 1913

Anaclastic

· An·a·clas·tic · IPA
01 a. Produced by the refraction of light, as seen through water; as, anaclastic curves.
  1. 1.
    Produced by the refraction of light, as seen through water; as, anaclastic curves.(Opt.)
  2. 2.
    Springing back, as the bottom of an anaclastic glass.
Phrases & compounds
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.