| air pollution, indoor | The contamination of indoor air. (12 Dec 1998) |
|---|---|
| pollution | <ecology> The changing of a natural environment, either by natural or artificial means, so that the environment becomes harmful to the living things normally found in it. most often this refers to the input of toxic chemicals into the environment. (09 Oct 1997) |
| tobacco smoke pollution | Contamination of the air by tobacco smoke. (12 Dec 1998) |
| 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) |