| cisternal puncture | Passage of a hollow needle through the posterior atlantooccipital membrane into the cisterna cerebellomedullaris. (05 Mar 2000) |
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| cisternography | The radiographic study of the basal cisterns of the brain after the subarachnoid introduction of an opaque or other contrast medium, or a radiopharmaceutical with a suitable detector. Origin: cisterna + G. Grapho, to write (05 Mar 2000) |
| cistron | <molecular biology> A genetic element defined by means of the cis trans complementation test for functional allelism, broadly equivalent to the sequence of DNA that codes for one polypeptide chain, including adjacent control regions. (18 Nov 1997) |
| cisvestism | The practice of dressing in clothes inappropriate to one's position or status. Compare: transvestism. Origin: L. Cis, on the near side of, + vestio, to dress (05 Mar 2000) |