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Glossary

By entering a keyword, all words will appear which have the keyword in its description.

To find the meaning of a particular word, click on the first letter of the word in the A-Z list below. By clicking on a particular word, all areas of the site which have this word are displayed.

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raw material:

natural substances used in industry

Recycle:

To collect and purify waste materials and converting them to new and useful products.

Relative humidity:

Relative humidity is a measure of how moist the air is at a certain temperature. It is the ratio between the actual amount of moisture in the air and the maximum potential amount of moisture that the air could hold at the same temperature. It is expressed as a percentage.

Republic:

A country that has a president

Resistance:

Oppose/fight or act against something.