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Partial or complete anesthesia produced by injecting an anesthetic into the spinal canal.
injection of an anesthetic into the lumbar region of the spinal canal to reduce sensitivity to pain in the lower body. Also called spi′nal block′.
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|Noun||1.||spinal anesthesia - anesthesia of the lower half of the body; caused by injury to the spinal cord or by injecting an anesthetic beneath the arachnoid membrane that surrounds the spinal cord|
regional anaesthesia, regional anesthesia - loss of sensation in a region of the body produced by application of an anesthetic agent to all the nerves supplying that region (as when an epidural anesthetic is administered to the pelvic region during childbirth)