- a form of gelatin prepared from the internal membranes of fish bladders: it is used as a clarifying agent and adhesive
- mica, esp. in the form of thin, transparent sheets of muscovite
Origin of isinglassprobably altered from Middle Dutch huizenblas, literally , sturgeon bladder from huizen, sturgeon + blas, bladder
- A transparent, almost pure gelatin prepared from the swim bladder of the sturgeon and certain other fishes and used as an adhesive and a clarifying agent.
- Mica in thin, transparent sheets.
Origin of isinglassBy folk etymology (influenced by glass ) from obsolete Dutch huizenblas from Middle Dutch hūsblase hūs sturgeon blase bladder ; see bhlē- in Indo-European roots.
(usually uncountable, plural isinglasses)