quartal

1. not comparablemathematicsOf base four; using only four unique digits.
2. not comparableentertainmentHaving a distinct preference for intervals of fourths.

plural quartals

1. rareA 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, Henry Lansdell, “Sundries Concerning Bokhara”, in Russian Central Asia: Including Kuldja, Bokhara, Khiva and Merv, volume II, London: Sampson Low, Marston, Searle, and Rivington, […], page 145

   3 more examples

   According to the police regulation, Moſco is partitioned into twenty chief diviſions, denominated from the principal ſtreets they ſeverally comprehend, e. gr. the Boſmanſkoi, the Verſkoi, &c. Each of theſe main diviſions are again divided into ſeveral quartals.

   1800, W[illiam] Tooke, “Sketch of Mosco”, in History of Russia, from the Foundation of the Monarchy by Rurik, to the Accession of Catharine the Second, volume II, London: […] A. Strahan, […], for T[homas] N[orton] Longman and O[wen] Rees, […], pages 367–368

   In order to simplify the regulations of the police, the city is divided into several quarters, or, according to the Russian terms, quartals. […] The first Admiralty Quartal, nearly in the centre of the city, is the smallest, but it is that in which luxury and wealth have established their headquarters.

   1827, George Matthew Jones, Travels in Norway, Sweden, Finland, Russia and Turkey; Also on the Coasts of the Sea of Azof and of the Black Sea: […], volume I, London: John Murray, […], pages 298–299

   Design large blocks (quartals) for social service and education units of population, but make them not more than five hundred meters on each side. […] Provide playfields within quartals in the ratio of not less than two and one-half square square meters per person living in the quartal.

   1932, “Russian planning norms”, in City Planning: Official Organ of the American City Planning Institute, the National Conference on City Planning, volume 8/9, page 169