One of the mysteries of the English language finally explained.
1A kind of gelatin obtained from fish, especially sturgeon, and used in making jellies, glue, etc., and for clarifying ale.
- ‘Guinness uses isinglass, a form of gelatine made from fish bladders, in the production process to make the stout clearer.’
- ‘There is no evidence that isinglass is detrimental to health.’
- ‘Antonin poured the thickening isinglass alternately into the fruit juice and the almond milk.’
- ‘The animal kingdom was represented by gelatin in the form of meat stock; isinglass; and hartshorn.’
- ‘Sometimes the wood surface was prepared with a coating of gesso or isinglass diluted in water with a little white pigment added.’
- 1.1US Mica or a similar material in thin transparent sheets.
Mid 16th century: alteration (by association with glass) of obsolete Dutch huysenblas ‘sturgeon's bladder’, from huysen ‘sturgeon’ + blas ‘bladder’.
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