Public review preview. Candidate definitions have not yet been read by the two reviewers. Each entry shows its review status.
biological

Judged: two independent readers; copy check clear.

spinal tap

spinal tap A spinal tap is an invasive medical procedure in which a hollow needle is placed through the lower back between the vertebrae to reach the space around the spinal cord.

A spinal tap is an invasive medical procedure in which a hollow needle is placed through the lower back between the vertebrae to reach the space around the spinal cord. It is done to collect cerebrospinal fluid or to deliver medication.