Denoting the cranial and sacral origins of the parasympathetic division of the autonomic nervous system.
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cra·nio·sa·cral .krā-nē-ō-'sak-rəl, -'sā-krəl adj
1) of or relating to the cranium and the sacrum
2) PARASYMPATHETIC <the \craniosacral division of the autonomic nervous system>
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cra·nio·sa·cral (kra″ne-o-saґkrəl) 1. pertaining to the skull and the sacrum. 2. pertaining to the parasympathetic nerves.Medical dictionary. 2011.