Dictionary entry

μακροχρόνιος

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

μακρο-χρόνιος, -ον

(μακρός, χρόνος), [in LXX. μ. γίγνεσθαι, εἶναι (יָמִיםהַאֲרִיךְ), Ex 20:12, De 4:40 5:16 17:20*;]

of long duration, longlived: Eph 6:3^(LXX).†