Democriteus
Could not find Democriteum in Logeion dictionaries.
Democriteum 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 Democriteus
Dēmŏcrĭtēus (-īus), a, um (Δημοκρίτειος), de Démocrite : Democritii Cic. Tusc. 1, 82, les disciples de Démocrite ; Anaxarchus Democriteus Cic. Nat. 3, 82, Anaxarque, disciple de Démocrite ; pl. n. Democritea Cic. Nat. 1, 73, enseignements de Démocrite.