quinary /ˈkwaɪ.nə.ɹi/adjective 3noun 1forms 1 adjective3 •Consisting of five things; arranged in fives. •To the base of five; represented by the numerals 0, 1, 2, 3 and 4. •Of fifth rank or order. noun1 •Any of 72 rays associated with the Sun, six for each of the 12 houses of the Zodiac. formsquinaries