sphenoid fontanel
n 1: the irregularly shaped area on either side of the cranium
where the frontal bone and the anterior tip of the parietal
bone and the temporal bone and the greater wing of the
sphenoid bone meet; corresponds to the pterion when bones
have ossified [syn: {sphenoid fontanelle}, {sphenoid
fontanel}, {sphenoidal fontanelle}, {sphenoidal fontanel}]