Noun isinglass has 1 sense
  1. mica, isinglass - any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity
    --1 is a kind of mineral; transparent substance, translucent substance
    --1 has particulars:
     biotite; lepidolite; muscovite; paragonite; phlogopite; zinnwaldite
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