Noun
olestra (countable and uncountable, plural olestras)
A fat substitute (a glyceride of sucrose) that cannot be easily digested and therefore adds no fat, calories, or cholesterol to food products; also used as an industrial lubricant.
We're consumers. We are by-products of a lifestyle obsession. Murder, crime, poverty, these things don't concern me. What concerns me are celebrity magazines, television with 500 channels, some guy's name on my underwear. Rogaine, Viagra, Olestra... Chuck Palahniuk
On his show, Rush often talked about “fat free” potato chips cooked not in vegetable oil, but in Olestra, a substitute that cannot be digested. Source: Internet