local anesthesia

Medical Dictionary

local anesthesia n.
Regional anesthesia produced by direct infiltration of local anesthetic solution into the surgical site. Also called infiltration anesthesia.

The American Heritage® Stedman's Medical Dictionary
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WordNet
local anesthesia

noun
loss of sensation in a small area of the body (as when a local anesthetic is injected for a tooth extraction) 
WordNet® 3.0, © 2006 by Princeton University.
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