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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

causal agent, cause, causal agency go
any entity that produces an effect or is responsible for events or results

agent go
a substance that exerts some force or effect

drug go
a substance that is used as a medicine or narcotic

anesthetic, anaesthetic, anesthetic agent, anaesthetic agent go
a drug that causes temporary loss of bodily sensations

local, local anesthetic, local anaesthetic, topical anesthetic, topical anaesthetic
anesthetic that numbs a particular area of the body

noun.artifact

8 Subcategories

anesthyl go
a mixture of methyl and ethyl chloride
antipruritic go
a substance that relieves or prevents itching
benzocaine, ethyl aminobenzoate go
a white crystalline ester used as a local anesthetic
butacaine, butacaine sulfate go
a white crystalline ester that is applied to mucous membranes as a local anesthetic
ethyl chloride go
a colorless flammable gas used as a local surface anesthetic
Lidocaine, Xylocaine go
a local anesthetic (trade names Lidocaine and Xylocaine) used topically on the skin and mucous membranes
procaine, Ethocaine go
a white crystalline powder (trade name Ethocaine) administered near nerves as a local anesthetic in dentistry and medicine
tetracaine go
a crystalline compound used in the form of a hydrochloride as a local anesthetic