Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun 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.
  • noun Mica in thin, transparent sheets.

from The Century Dictionary.

  • noun The purest commercial form of gelatin, a substance of firm texture and whitish color, prepared from the sounds or air-bladders of certain fresh-water fishes.
  • noun Mica: so called from its resemblance to some forms of the gelatin.

from the GNU version of the Collaborative International Dictionary of English.

  • noun A semitransparent, whitish, and very pure form of gelatin, chiefly prepared from the sounds or air bladders of various species of sturgeons (as the Acipenser huso) found in the rivers of Western Russia. It used for making jellies, as a clarifier, etc. Cheaper forms of gelatin are not unfrequently so called. Called also fish glue.
  • noun (Min.) A popular name for mica, especially when in thin sheets.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A form of gelatine obtained from the air bladder of the sturgeon and certain other fish, used as an adhesive and as a clarifying agent for wine and beer.
  • noun A thin, transparent sheet of mica.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun 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

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[By folk etymology (influenced by glass) from obsolete Dutch huizenblas, from Middle Dutch hūsblase : hūs, sturgeon + blase, bladder; see bhlē- in Indo-European roots.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Apparently from obsolete Dutch huisenblas, German Hausenblase ("sturgeon's bladder").

Support

Help support Wordnik (and make this page ad-free) by adopting the word isinglass.

Examples

  • More photos and interactive graphics Sturgeon-bladder powder, called isinglass, is what winemaker Larry Londer added to a few gallons of his 2008 pinot noir to try to fix it.

    Sipping These Wines Is Like Smoking and Drinking at the Same Time Ben Worthen 2010

  • This is because many beers are classified with isinglass, which is a collagen made from the bladders of fish.

    Progressive Bloggers 2008

  • This is because many beers are classified with isinglass, which is a collagen made from the bladders of fish.

    Progressive Bloggers 2008

  • More taste trials follow in the lab with the blends, using different potential fining agents, such as isinglass (sturgeon bladder) or casein (milk protein) – for whites – to improve the palate.

    A working life: The winemaker 2010

  • Mica — A group of minerals, including muscovite or "isinglass" and biotite or black mica.

    Tseh So, a Small House Ruin, Chaco Canyon, New Mexico : 1937

  • I know I like saying the names of trees and plants when I identify them, and I’m also excited to hear what obscure mechanical parts are called isinglass and petcock, for instance.

    Dear Clusterflock | clusterflock 2009

  • This filtering, aka fining, is typically performed with fish-bladder isinglass or egg whites, although some companies now choose vegan alternatives such as bentonite clay, silica gel, diatomaceous earth and Irish moss, a seaweed product also known as carrageenan.

    Anneli Rufus: Are Animals in Your Cocktail? Anneli Rufus 2011

  • Beer and ale are traditionally clarified -- "fined," in industry parlance -- with isinglass, a gluey substance made from fish bladders.

    Anneli Rufus: Are Animals in Your Cocktail? Anneli Rufus 2011

  • Beer and ale are traditionally clarified -- "fined," in industry parlance -- with isinglass, a gluey substance made from fish bladders.

    Anneli Rufus: Are Animals in Your Cocktail? Anneli Rufus 2011

  • Beer and ale are traditionally clarified -- "fined," in industry parlance -- with isinglass, a gluey substance made from fish bladders.

    Anneli Rufus: Are Animals in Your Cocktail? Anneli Rufus 2011

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.

  • A transparent, almost pure gelatin prepared from the air bladder of the sturgeon and certain other fishes and used as an adhesive and a clarifying agent.

    1528, said to be perversion of Du. huysenblas, lit. "sturgeon bladder," from huysen "sturgeon" + blas "bladder;" so called because the substance was obtained from it.

    October 20, 2007

  • Good for making curtains that will roll right down...

    October 21, 2007

  • ...from the unmarred dead body of the whale, you may scrape off with your hand an infinitely thin, transparent substance, somewhat resembling the thinnest shreds of isinglass...

    - Melville, Moby-Dick, ch. 68

    July 26, 2008

  • ...In case there's a change in the weather.

    A favourite song.

    December 29, 2008

  • "There is almost no waste to a cod.... The air bladder, or sound, a long tube against the backbone that can fill or release gas to adjust swimming depth, is rendered to make isinglass, which is used industrially as a clarifying agent and in some glues..."

    —Mark Kurlansky, Cod: A Biography of the Fish That Changed the World (New York: Penguin, 1997), 34

    P.S. the ad on this page right now: "Petrossian. Since 1920. There are many options with caviar. Choose the best."

    July 14, 2009

  • Heehee.

    July 14, 2009