verticality UK /ˌvɜːtɪˈkalɪti/US /ˌvɚtəˈkæləti/ noun1 •Verticalness; the state or condition of being vertical.From their garden, a precarious terrace in a world of verticality, we could look down two or three thousand feet into the Teesta Valley below, an inky well imprisoning a fleet of porcelain clouds. — 1933 formsverticalities