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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
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chemical, chemical substance go
material produced by or used in a reaction involving changes in atoms or molecules
material produced by or used in a reaction involving changes in atoms or molecules
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compound, chemical compound go
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
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rubber, synthetic rubber go
any of various synthetic elastic materials whose properties resemble natural rubber
any of various synthetic elastic materials whose properties resemble natural rubber
buna, buna rubber
made by polymerizing butadiene
made by polymerizing butadiene
noun.substance
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