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.