| SSD | shaded surface display; single saturating dose; Social Security disability; source-skin distance; so... |
|---|---|
| CSO | claims services only; common source outbreak; craniostenosis; craniosynostosis; ostium of coronary s... |
| MSI | magnetic source imaging; medium-scale integration |
| SAD | Scale of Anxiety and Depression; seasonal affective disorder; Self-Assessment Depression [scale]; se... |
| VPS | ventriculoperitoneal shunt; verbal pain scale; virtual point source; visual pleural space; volume pe... |
| BESA | Brain electric source analysis |
|---|---|
| CSD | Current Source Density |
| MSI | Magnetic Source Imaging |
| PSD | Post Source Decay |
| s | source |
| ignition | <radiobiology> In fusion, as in an ordinary (chemical) fire, ignition is the point where the temperature and confinement of heat in the fuel (plasma in the case of fusion) are such that energy released from ongoing reactions is sufficient to maintain the temperature of the system, and no external heating is needed. An ignited fusion plasma produces so much energy from fusion reactions that the plasma is fully heated by fusion reaction products (alpha particles in the case of D-T fusion), and the plasma no longer needs any external source of power to maintain its temperature. (The plasma may, however, still need something to maintain its confinement, this gives us control over the fusion reaction and helps prevent fusion reactors from having meltdown problems like fission reactors.) (09 Oct 1997) |
|---|---|
| ignition temperature | <radiobiology> For given values of density and energy confinement, the temperature at which ignition occurs. (see ignition above) (09 Oct 1997) |
| carbon source | Any carbon-containing organic molecule (carbohydrate, aminoacid) that an organism can use to produce energy in the form of ATP. (09 Oct 1997) |
| major source | A source that emits, or has the potential to emit, a pollutant regulated under the Clean Air act in excess of a specified rate in a nonattainment area. (05 Dec 1998) |
| common-source epidemic | <microbiology> An epidemic resulting from infection of a large number of people from a single contaminated source. (09 Oct 1997) |
| point source | In photometry, a very small source of light which is regarded as a geometrical point from which light emanates in straight lines in all directions. (05 Mar 2000) |
| power source | Devices that supply energy. (12 Dec 1998) |
| source emission reduction plan | (SERP) A contingency plan developed to reduce emissions during an air quality emergency. (05 Dec 1998) |
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