quartal adjective 2noun 1forms 1 adjective2 •Having a distinct preference for intervals of fourths. •Of base four; using only four unique digits. noun1 •(rare) A section or block of a city in Russia.Thus in the Ishan’s yard, not far from the Russian Company’s office, in the quartal of Bokhara called Juibar, may be seen a number of these patients chained, or rather picketed, to posts like horses. — 1885 formsquartals