Usage: 3 forms in 9 verses
Form Translated As     In Verse(s)
στηριγμάτων of ones supporting LXX.2Sam.20.19
στηρίγματοσ support LXX.2Kgs.25.11
στήριγμα a support LXX.Ps.72.16
reliance LXX.Ezra.9.8LXX.Ps.105.16LXX.Ezek.4.16LXX.Ezek.5.16LXX.Ezek.7.11
reliance on LXX.Ezek.14.13

Liddell-Scott-Jones

στήριγμα (stērigma) a reliance G:N-N

στήριγμα-μα, ατος, τό,

support, foundation, χερὸς.. στηρίγματα the support of one's hand, [Refs 5th c.BC+]; στηρίγματ᾽ οἴκου, of children, [Refs 1st c.AD+]: in plural, of a tower, [Refs 1st c.AD+]

__2 ={στῆριγξ}[στήριγμαγα conjecture Kock), 1st-2nd c.AD: Plutarchus Biographus et Philosophus “Coriolanus” 24. ">Refs 4th c.BC+]
__3 ={στεῖρα} (A), στερέωμα [Refs 4th c.AD+]
__4 ={στερέωμα}[Refs]
__5 τὸ λοιπὸν τοῦ σ. the rest of the multitude, [LXX]
__6 plural, surgical supports, ={ἀποστηρίγματα}, distinguished from ἑρμάσματα, [Refs 2nd c.AD+]

LSJ Scripture Refs: LXX.2Kgs.25.11