three-quarters UK /θɹiːˈkwɔːtəz/US /θɹiˈk(w)ɔɹtɚz/ noun2 •Three of four equal parts (3/4, ¾, 0.75).The role of men is evolving even in the three-quarters of dual-parent families in which fathers are the primary breadwinners. — 2013 •forty-five minutesIt took two hours and three-quarters to get home.