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A calorie-free fat substitute synthesized from sucrose and vegetable oil for use in snacks such as potato chips, and capable of passing through the body without being digested.

[ol(eo)- + alteration of (poly)ester.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(oʊˈlɛs trə)
a synthetic oil used as a substitute for dietary fat: not digested or absorbed by the human body.
[1990–95; ol- (< Latin oleum oil) + -estra, alter. of (poly)ester]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Olestra, which is to fat what saccharin and aspartame (Nutrasweet) are to sugar, has been approved in America for use in a variety of snack foods and is currently being tested in crisps.
Olestra, a fat substitute submitted for Food and Drug Administration (FDA) scrutiny eight years ago by Procter & Gamble, Cincinnati, Ohio, USA (Phone: 513-983-1100), finally won approval Dec.
Olestra is a fat substitute that transforms food into a physiologically unnecessary thing.
The magic ingredient is olestra. And its effects on our diet could be so far-reaching it's being dubbed the food industry's FATOM bomb.
Many of them will be using new fat substitutes, such as "Olestra" and "Simplesse." More exciting are the new uses of water-soluble gums for thickeners and texturizers for creamy foods, sauces, and baked goods.
Some medical conditions such as inflammatory bowel disease, surgeries such as gastric bypass surgery, medications such as orlistat, and fake foods such as Olestra reduce the ability of the intestines to absorb fat-soluble nutrients.
Be aware some contain olestra (Olean), a calorie-free fat substitute that in large amounts can cause loose stools.
It is a significant factor in driving the growth of the global Olestra Market , and the trend is expected to continue in the future as well.
Effects ofyo-yo diet, caloric restriction, and olestra on tissue distribution of hexachlorobenzene.
We got rid of partially hydrogenated oil (the source of artificial trans fat), sulfites (a sometimes-lethal allergen) that were used to treat fresh vegetables, Violet 1 dye, and Olestra (we laughed the diarrhea-inducing fake fat out of the food supply).
The weight loss drugs Orlistat or Olestra, and the cholesterol-lowering bile acid sequestrants Choletryamine, Colestipol, and Colsevelam can block fat absorption, creating a potential for vitamin K deficiency since it is fat-soluble.
It outlines the regulatory history of the food industry, the most common foodborne illnesses, food safety management systems, outbreak investigations, international food safety, consumer roles, and other food safety threats, including the additives and contaminants aspartame, olestra, acrylamide, benzene, mercury in fish, and polychlorinated biphenyls in salmon, as well as additional problems and controversies like pesticides, growth hormones in cattle, genetically modified organisms, irradiation, antibiotic resistance, pink slime, and raw milk.