Meaning of chondrocranium

chon•dro•cra•ni•um

Pronunciation: (kon"drō-krā'nē-um) [key]
— pl. -ni•ums, -ni•a
  1. a braincase composed of cartilage rather than bone, as the skull of sharks and of the vertebrate embryo before ossification.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.