| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,762,357,733 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
doughnut |
Also found in: Wikipedia | 0.05 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | ? References in periodicals archive | ||
|---|---|---|---|
| Part Doughnut Hole," no one has as yet been able to comprehend it, though it seems to work fine for people who are willing to substitute shark cartilage and lemon grass tea for prescription drugs. People taking one of the disease-modifying therapies--which typically cost $16,000 to $22,000 a year--find that they hit this doughnut hole in the first few months. The existence of the doughnut hole has been publicized since the drug plan was passed by Congress. |
| Encyclopedia |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|