μακροχρόνιος
ἀμήχανον δὲ παντὸς ἀνδρὸς ἐκμαθεῖν ψυχήν τε καὶ φρόνημα καὶ γνώμην, πρὶν ἂν ἀρχαῖς τε καὶ νόμοισιν ἐντριβὴς φανῇ → hard it is to learn the mind of any mortal or the heart, 'till he be tried in chief authority | it is impossible to know fully any man's character, will, or judgment, until he has been proved by the test of rule and law-giving
English (LSJ)
ον,
A lasting a long time, lingering, Hp.Epid.3.7; πυρετός Gal.17(2).739 (Sup.); τὸ μ. long duration, Agatharch.83. 2 dwelling a long time, LXX Ex.20.12, al. 3 long-lived, Ep.Eph.6.3; βοῦς Porph. VP24 (Sup.).
Greek (Liddell-Scott)
μακροχρόνιος: -ον, διαρκῶν ἐπὶ μακρὸν χρόνον, ἢ ζῶν ἐπὶ μακρόν, παραμένων, Ἱππ. Ἐπιδημ. τὸ Γ΄, 1085· τὸ μακροχρόνιον = ἡ μακροχρονιότης, τοῦ λιμοῦ τὸ μακροχρόνιον, ἡ ἐπὶ πολὺν χρόνον διάρκεια αὐτοῦ, Ἀγαθαρχίδ. περὶ Ἐρυθρ. Θαλάσσ. σ. 56.
English (Strong)
from μακρός and χρόνος; long-timed, i.e. long-lived: live long.
English (Thayer)
μακροχρονιον (μακρός and χρόνος), literally, 'long-timed' (Latin longaevus), long-lived: Deuteronomy 5:16; very rare in secular authors.)