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isinglass

Syllabification: (i·sin·glass)

Pronunciation: /ˈīzənˌglas, ˈīziNG-/

Definition of isinglass

noun

a kind of gelatin obtained from fish, especially sturgeon, and used in making jellies, glue, etc., and for clarifying ale.
chiefly 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'