I'sin-glass, n.

(ī’zing-glās), n. [That is, iceglass, from icing, ice, and glass, q. v. Cf. Ger. hausenblase, i. e., bladder of the huso, or large sturgeon.]

1. A semi-transparent, whitish form of gelatine, chiefly prepared from the sounds or air bladders of various species of sturgeons found in the rivers of Western Russia, as the Beluga (or Acipenser) huso, the A. stellatus, the A. Guldenstädtii, and others. Its manufacture is mentioned by Pliny. Cheaper forms of gelatine are not unfrequently so called. Brande.
2. The sheets of mica;—popularly so called. Hill.