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chemical

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Chemical means relating to chemistry or the use of a drug. (adjective)

An example of chemical smell is the odor of Lysol.
An example of chemical is the dependency on cocaine or alcohol.

A chemical is a substance created by chemistry. (noun)

An example of chemical is a pesticide.

See chemical in Webster's New World College Dictionary

adjective

of or having to do with chemistry
made by or used in chemistry
operated or made by the use of chemicals: chemical burns
☆ of or involving the use of a drug, alcoholic liquor, etc.: chemical dependency

noun

any substance used in or obtained by a chemical process
☆ Slang a drug, alcoholic beverage, etc.

Related Forms:

chemically adverb

See chemical in American Heritage Dictionary 4

(kĕmˈĭ-kəl)

adjective

Of or relating to chemistry.
Of or relating to the properties or actions of chemicals.

noun

A substance with a distinct molecular composition that is produced by or used in a chemical process.
A drug, especially an illicit or addictive one.

Related Forms:

chemˈi·cal·ly adverb

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