| environment | (noun) the area in which something exists or lives | Synonyms: environs, surround, surroundings |
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| (noun) the totality of surrounding conditions | - |
| environmentalism | (noun) the activity of protecting the environment from pollution or destruction | - |
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| (noun) the philosophical doctrine that environment is more important than heredity in determining intellectual growth | - |
| environmentalist | (noun) someone who works to protect the environment from destruction or pollution | Synonyms: conservationist |
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| environs | (noun) the area in which something exists or lives | Synonyms: environment, surround, surroundings |
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| (noun) an outer adjacent area of any place | Synonyms: purlieu |
| viroid | (noun) the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat | Synonyms: virusoid |
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| virologist | (noun) a specialist in virology | - |
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| virology | (noun) the branch of medical science that studies viruses and viral diseases | - |
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