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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
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physical entity go
an entity that has physical existence
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matter go
that which has mass and occupies space
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substance go
the real physical matter of which a person or thing consists
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material, stuff go
the tangible substance that goes into the makeup of a physical object
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chemical, chemical substance go
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
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acid go
any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt
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carboxylic acid go
an organic acid characterized by one or more carboxyl groups
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fatty acid go
any of a class of aliphatic monocarboxylic acids that form part of a lipid molecule and can be derived from fat by hydrolysis
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unsaturated fatty acid go
a fatty acid whose carbon chain can absorb additional hydrogen atoms
polyunsaturated fatty acid
an unsaturated fatty acid whose carbon chain has more than one double or triple valence bond per molecule
noun.substance

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