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doughnut
(redirected from Jam Doughnut)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
doughnut (esp US), donut
anything shaped like a ring, such as the reaction vessel of a thermonuclear reactor

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.

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.


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It's always tempting to purchase more than one piece, especially the sugar and jam doughnuts.
s not quite the jam doughnut they would like to see but it?
People are always surprised when we tell them a bottle of red wine has as many calories as six jam doughnuts, and this backs up our warnings.
 
 
 
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