Δημοκρίτειοι
From LSJ
τὸ πλῆθος οὐκ εὐαρίθμητον ἦν → the crowd wasn't easy to count, the crowd was not small, it was not a small crowd
English (LSJ)
οἱ, followers of Democritus of Abdera, Ael.VH12.25, Plu.2.1108e; ἡ Δ. φιλοσοφία S.E.P.1.213.
Greek (Liddell-Scott)
Δημοκρίτειοι: οἱ, οἱ ὀπαδοὶ τοῦ Ἀβδηρίτου Δημοκρίτου,Αἰλ. Π. Ἱστ. 12. 25, Πλούτ. 2. 1108Ε.