Usage: 3 forms in 4 verses
Form Translated As     In Verse(s)
ηδρύνθησαν matured LXX.Judg.11.2
ηδρύνθη it matured LXX.2Sam.12.3
matured LXX.2Kgs.4.18
αδρυνθέντοσ maturing LXX.Exod.2.10

Liddell-Scott-Jones

ἁδρύνω (hadrunō) to mature G:V

ἁδρύνω-ύνω,

(ἁδρύνωός) ripen, mature, [ἁδρύνωῦναι καὶ πέψαι τὸν καρπόν 4th-3rd c.BC: Theophrastus Philosophus “Historia Plantarum” 3.1.3">Refs 5th c.BC+]:—passive, grow ripe, ripen, come to maturity, of fruit or corn, [Refs 5th c.BC+]; of embrya, [Refs 5th c.BC+]; of nestlings, [Refs]