Acrania

n. developmental disorder which results in the absence of part or all of the skull (Physiology)

A·cra·ni·a n. Congenital absence of all or a part of the skull. a·cra ni·al adj. acrania partial or complete absence of the cranium. [more]Acrania - Community and Resources

n. acrania, developmental disorder which results in the absence of part or all of the skull (Physiology)

(n.)
The lowest group of Vertebrata, including the amphioxus, in which no skull exists.
  

(n.)
Partial or total absence of the skull.
  

B: (Biologi) akrania
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