parasagittal Syllabification: (par·a·sag·it·tal)Pronunciation: /ˌparəˈsajitl/Definition of parasagittal adjective Anatomy relating to or situated in a plane adjacent or parallel to the plane that divides the body into right and left halves. Derivatives parasagittally adverb parasagittal in other Oxford dictionaries Definition of parasagittal in the British & World English dictionary