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Reverse Search
Reverse Search allows you to search within the full text of dictionary entries for words, word parts, and phrases.
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| acid rain |
rain that contains acid from pollution. |
| clean |
pure; free from pollution. [1/6 definitions] |
| conservation |
the protection of natural resources, such as soil, water, or forests, from loss, pollution, or waste. [1/2 definitions] |
| environment |
When we talk about the environment, we often mean the natural things around all of us as we live on our planet Earth. The environment is made up of things like the air, the water, the plants, and the soil. We know now that we have to protect the environment. Things like pollution cause damage to it and cause harm to animals and humans. [1/3 definitions] |
| green |
of an institution or business, conserving as much energy as possible and contributing little to environmental pollution. [2/11 definitions] |
| pollution |
Dirty material in air, water, or soil is called pollution. When there is pollution, water may not be healthy to drink or to swim in. Air may be bad to breathe. People may not be able to use the soil for growing things. [2 definitions] |
| smog |
a mixture of smoke and fog that is caused by moist air and human pollution. |
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