endocranial en·do·cra·ni·al (ěn'dō-krā'nē-əl)
adj.
Within the cranium.
Of or relating to the endocranium.
endocranium en·do·cra·ni·um (ěn'dō-krā'nē-əm)
n. pl. en·do·cra·ni·a (-nē-ə)
The outermost layer of the dura mater.
The inner surface of the skull.