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Noun: isinglass  'I-zin,glãs
  1. Any of various minerals consisting of hydrous silicates of aluminium or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
    - mica

Derived forms: isinglasses

Type of: mineral, translucent substance, transparent substance

Encyclopedia: Isinglass