Definition of Cranio-

Cranio-: Referring to the cranium, the top portion of the skull, the bony vault that protects the brain. As in craniocleidodysostosis, craniology, craniopharyngioma, craniotomy, etc.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=16311
Last Editorial Review: 6/14/2012