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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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causal agent, cause, causal agency go
any entity that produces an effect or is responsible for events or results
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agent go
a substance that exerts some force or effect
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drug go
a substance that is used as a medicine or narcotic
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medicine, medication, medicament, medicinal drug go
(medicine) something that treats or prevents or alleviates the symptoms of disease
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bronchodilator go
a drug that relaxes and dilates the bronchial passageways and improves the passages of air into the lungs
ephedrine
white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically
noun.substance

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