δεκάτευσις
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
English (LSJ)
εως, ἡ,
A decimation, D.H.1.24.
German (Pape)
[Seite 543] ἡ, die Nehmung des zehnten Theiles, z. B. des zehnten Mannes, Decimirung, Dion. Hal. 1, 24; χρημάτων 1, 40.