spinal tap

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tap

 [tap]
1. a quick, light blow.
2. to drain off fluid by paracentesis.
spinal tap lumbar puncture.

lum·bar punc·ture (LP),

a puncture into the subarachnoid space of the lumbar region to obtain spinal fluid for diagnostic or therapeutic purposes.

spinal tap

Lumbar puncture, see there.

lum·bar punc·ture

(lŭm'bahr pŭngk'shŭr)
A puncture into the subarachnoid space of the lumbar region to obtain spinal fluid for diagnostic or therapeutic purposes.
Synonym(s): rachicentesis, rachiocentesis, spinal tap.

spinal tap

See LUMBAR PUNCTURE.