Sicyonius
Could not find Sicyonium in Logeion dictionaries.
Sicyonium Proper-name adjective: neuter vocative singular, Proper-name adjective: masculine genitive plural, Proper-name adjective: masculine accusative singular, Proper-name adjective: neuter genitive plural, Proper-name adjective: neuter nominative singular, Proper-name adjective: neuter accusative singular of Sicyonius
Sicyonium Proper-name noun: neuter genitive plural of Sicyonia
Sĭcўōnĭus, a, um, de Sicyone : Sicyonii calcei Cic. de Or. 1, 231, et Sicyonia, n. pl. Lucil. d. Fest. 337 ; Lucr. 4, 1125, chaussures de Sicyone [élégantes] || Sicyonii, m. pl., Sicyoniens, habitants de Sicyone : Cic. Tusc. 3, 53.