Entry 1 sense Webster, 1913 Ventricular /vĕn-trĭk'-yo͞ol-ẽr/ · Ven·tric·u·lar · IPA /vɛntrˈɪkjuːlər/ 01 a. Of or pertaining to a ventricle; bellied. 1. Of or pertaining to a ventricle; bellied.