Definition of "olestra" []

• 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "A product called olestra has been approved by health authorities in the United States for sale."
• "Looking at the ingredients, it appears that the olestra is the only difference."
• "The pinnacle of the all-fat-is-bad movement may have been the widely hyped introduction of the fake fat known as olestra."