Final answer:
Anesthetics are substances that produce insensibility or stupor. They are used to block pain and sensation during medical procedures.
Step-by-step explanation:
The term for substances that produce insensibility or stupor is anesthetics. Anesthetics are used to block pain and sensation during medical procedures. They can be administered through inhalation, injection, or topical application. Examples of anesthetics include local anesthetics like lidocaine and general anesthetics like propofol. These substances work by interfering with nerve signals and temporarily suspending consciousness.
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