Usage: 3 forms in 8 verses
Form Translated As     In Verse(s)
μακρότητοσ their duration LXX.Eccl.8.12
μακρότητα duration LXX.Ps.21.4LXX.Ps.23.6LXX.Ps.93.5LXX.Lam.5.20
with duration LXX.Ps.91.16
μακρότησ a duration LXX.Dan.7.12
duration LXX.Deut.30.20

Liddell-Scott-Jones

μακρότης (makrotēs) duration G:N-M

μακρότης-της, ητος, ,

length, τῶν ἡμερῶν [LXX+1st c.BC+]

LSJ Scripture Refs: LXX.Deut.30.20