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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

matter go
that which has mass and occupies space

substance go
the real physical matter of which a person or thing consists

material, stuff go
the tangible substance that goes into the makeup of a physical object

chemical, chemical substance go
material produced by or used in a reaction involving changes in atoms or molecules

compound, chemical compound go
(chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight

organic compound go
any compound of carbon and another element or a radical

ketone go
any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals

ketone body, acetone body go
a ketone that is an intermediate product of the breakdown of fats in the body

beta-hydroxybutyric acid
beta derivative of hydroxybutyric acid that is found in the blood and urine in some cases of impaired metabolism

noun.substance

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