cervix vesicae urinariae cervix ve·si·cae u·ri·nar·i·ae (vĭ-sī'kē' y&oobreve;r'ə-nâr'ē-ē', vĭ-sē'kē') n. The lowest part of the bladder, formed by the junction of the fundus and the inferolateral surfaces; neck of urinary bladder.