doughnut

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doughnut

(esp US), donut
anything shaped like a ring, such as the reaction vessel of a thermonuclear reactor
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

doughnut

[′dō‚nət]
(nucleonics)
Also spelled donut.
The toroidal vacuum chamber in which electrons are accelerated in a betatron or synchrotron. Also known as toroid.
An assembly of enriched fissionable material, often doughnut-shaped, used in a thermal reactor to provide a local increase in fast neutron flux for experimental purposes.
(petroleum engineering)
A ring of wedges or a threaded, tapered ring that supports a pipe string.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

concrete collar, doughnut

A collar of reinforced concrete which is placed around an existing column so that it can be jacked up; the shrinkage of the concrete causes it to grip the column firmly.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The Mister Donut brand began in Boston in 1955 and is currently said to be the largest doughnut franchise chain in Japan.
"We grew up with the Sunday doughnuts kind of thing," Nunley said.
Merilyn Delesela, 41, sales head of House of Donuts, said: "We serve alongside doughnuts, croissants and muffins and our customers mostly come by to take away their bag of goodies."
Over three million people every day pick up at least one of the 52 types of doughnuts or the dozen kinds of coffee available at Dunkin' Donuts outlets, the company claims.
Louis metropolitan area, said it would continue to sell boxed Krispy Kreme glazed doughnuts alongside its new Dierbergs doughnuts.
Granted, doughnuts have always had a special connection with fall: During harvest season, cider mills (especially in the Northeast) frequently serve doughnuts made with apple cider to visitors, and in older times, autumn butchering yielded plenty of fresh lard for frying.
It's like at Krispy Kreme, where the person who takes your order is probably also the one that selects the doughnuts coming off the line that meet a quality standard.
A single (200-calorie) Krispy Kreme Original Glazed Doughnut, for example, serves up 4 grams of trans fat and 3 grams of saturated fat.
Rolo doughnuts represent the ultimate treat for all ages: tasty ring doughnuts packed with toffee sauce, topped with chocolate icing and smothered with mouthwatering toffee pieces.
Our publisher handed out Krispy Kreme glazed donuts, or doughnuts, earlier today, before the latest edition of AJR arrived at my desk.
"There's nothing better in the airport," explains Gerardo Andrade, carrying a bag of 30 doughnuts onto his flight to Cucuta.