σκληρυσμός
From LSJ
ἐν πιθήκοις ὄντα δεῖ εἶναι πίθηκον → in Rome we do as the Romans do | when in Rome, do as the Romans do | when in Rome, do as the Romans | when in Rome, do like the Romans do | when in Rome | being among monkeys one has to be a monkey
English (LSJ)
ὁ,
A hardening, induration, Id.Prorrh.1.19, cf. Coac.98, Antyll. ap. Orib. 45.15.5.