chon.dro.cra.ni.um
n.（名词）【复数】 chon.dro.cra.ni.ums 或 chon.dro.cra.ni.a [-nô-…] The cartilaginous cranium of an embryo before ossification.软骨颅：胚胎在骨化作用之前的软骨性头颅A portion of the embryonic cranium forming the bones of the base of the skull and eventually undergoing ossification.软骨颅：胚胎的头颅中形成颅骨基部骨头并最终被骨化的部分
