sinciputPronunciation: /ˈsɪnsɪpʌt/Definition of sinciput noun Anatomy the front of the skull from the forehead to the crown. Derivatives sincipitalPronunciation: /-ˈsɪpɪt(ə)l/ adjective Origin: late 16th century: from Latin, from semi- 'half' + caput 'head'sinciput in other Oxford dictionaries Definition of sinciput in the US English dictionary