ROGET THESAURUS
pentavalent
Quinquesection
N
quinquesection, &c, division by five, quinquesection, decimation, fifth, quinquefid, quinquelateral, quinquepartite, quinqevalent,
pentavalent, quinquarticular, octifid, decimal, tenth, tithe, duodecimal, twelfth, sexagesimal, sexagenary, hundredth, centesimal, millesimal.