chondrocranium

[ kon-droh-krey-nee-uhm ]

/ ˌkɒn droʊˈkreɪ ni əm /

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noun, plural chon·dro·cra·ni·ums, chon·dro·cra·ni·a

[kon-droh-krey-nee-uh]. /ˌkɒn droʊˈkreɪ ni ə/.

a braincase composed of cartilage rather than bone, as the skull of sharks and of the vertebrate embryo before ossification.

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Which of the following words means “to make a crackling sound; crackle”?

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Origin of chondrocranium

First recorded in 1870–75; chondr(i)o- + cranium

Behind, the primary skull or chondrocranium gives off two occipal or rear skull plates.
Degeneracy|Eugene S. Talbot
These two conditions result from the inability of the dermal bones to fill at the proper period the gaps in the chondrocranium.
Degeneracy|Eugene S. Talbot
The chondrocranium, jaws, arches, and muscles of a partly grown larva.
The Ancestry of Modern Amphibia: A Review of the Evidence|Theodore H. Eaton
In the Dipneusti36 the chondrocranium is strengthened in the adult by numerous bones.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3|Various

Numerous membrane bones cover the chondrocranium externally.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3|Various

chondrocranium

[ kŏn′drō-krā′nē-əm ]

The cartilaginous parts of the developing skull.