sacculeEnglishOxford New American Dictionarysaccule /ˈsakyo͞ol, ˈsækjul / ▸ noun Biology & Anatomy a small sac, pouch, or cyst. ▪ another term for sacculus. – DERIVATIVES saccular /ˈsakyələr, ˈsækjələr / adjective,sacculated /ˈsakyəˌlātid/ adjective,sacculation /ˌsakyəˈlāSHən/ noun– ORIGIN mid 19th century : anglicized form of Latin sacculus (see sacculus).