Usage: 3 forms in 9 verses
Form Translated As     In Verse(s)
πάχοσ its thickness LXX.2Chr.4.5LXX.Jer.52.21
thick LXX.1Kgs.7.6LXX.Ps.141.7
thickness LXX.1Kgs.7.26
πάχη of their thickness LXX.Num.24.8
πάχει thick LXX.1Kgs.7.46LXX.2Chr.4.17
thickness LXX.Job.15.26

Liddell-Scott-Jones

πάχος (pachos) thickness G:N-N

πάχος [], εος, τό,

(παχύς) thickness, τόσσον ἔην μῆκος τόσσον π. [Refs 8th c.BC+]; τὰ π. αὐτῶν ἐκμυελιεῖ [πάχος">LXX+3rd c.BC+] in thickness, [Refs 5th c.BC+]

__2 σαρκὸς π. stoutness, [πάχος τοῦ σώματος 4th c.BC: Antiphanes Comicus 19 ">Refs 5th c.BC+]; opposed to λεπτότης, [Refs 5th c.BC+]
__3 consistency, thickness, of liquids or fluids, [Refs 4th c.BC+]; τὸ π. τῆς θαλάσσης, attributed to its saltness, [Refs 3rd c.BC+]
__4 in concrete sense, thick mass, [Refs 1st c.AD+]

LSJ Scripture Refs: LXX.Num.24.8