| air pollution, indoor | The contamination of indoor air. (12 Dec 1998) |
|---|---|
| pesticide | <pharmacology> A chemical which is used to kill unwanted organisms such as rats, insects, nematodes, etc. Pesticides often act as nerve poisons, and they are hazardous to animals and humans (some pesticides can cause nerve or liver damage, birth defects and cancer). See: biological magnification and herbicide. (09 Oct 1997) |
| pesticide residues | Pesticides or their breakdown products remaining in the environment following their normal use or accidental contamination. (12 Dec 1998) |
| pesticide synergists | Chemicals that, while not possessing inherent pesticidal activity, nonetheless promote or enhance the effectiveness of other pesticides when combined. (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) |