Definition of isinglass in English:

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isinglass

Pronunciation: /ˈʌɪzɪŋˌɡlɑːs/

noun

[mass noun]
1A kind of gelatin obtained from fish, especially sturgeon, and used in making jellies, glue, etc. and for fining real ale.
Example sentences
  • The animal kingdom was represented by gelatin in the form of meat stock; isinglass; and hartshorn.
  • Antonin poured the thickening isinglass alternately into the fruit juice and the almond milk.
  • Sometimes the wood surface was prepared with a coating of gesso or isinglass diluted in water with a little white pigment added.
2chiefly US Mica or a similar material in thin transparent sheets.

Origin

Mid 16th century: alteration (by association with glass) of obsolete Dutch huysenblas 'sturgeon's bladder', from huysen 'sturgeon' + blas 'bladder'.

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