#tetracaine  a crystalline compound used in the form of a hydrochloride as a local anesthetic
  supertype:  #local_anesthetic__localanesthetic__local_anaesthetic__localanaesthetic__local__topical_anesthetic__topicalanesthetic__topical_anaesthetic__topicalanaesthetic  anesthetic that numbs a local area of the body
     supertype:  #anesthetic_agent__anesthetic__anaesthetic__anaesthetic_agent__anaestheticagent  a drug that causes temporary loss of bodily sensations
        supertype:  #drug  a substance that is used as a medicine or narcotic
           supertype:  #agent.causal_agent  a substance that exerts some force or effect
              supertype:  #causal_agent__cause__causal_agency  any entity that causes events to happen
                 supertype:  pm#thing_playing_some_role  category to classify things according to roles/viewpoints; classification under this category is application-dependant
                    supertype:  pm#thing__something___T__t___3D_or_4D_thing_or_anything_else  any category (type or individual) is instance of this type; any type is also a subtype of this type

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