G4733
στερέωμα
firmness
στερέωμα, -τος, τό (στερεόω), [in LXX: Gen.1:6 ff., Psa.19:1 150:1, Eze.1:22-26 10:1 13:5, Dan LXX, TH Dan.3:56, Dan.12:3 (רָקִיעַ), Deu.33:26 (שַׁחַק), Psa.18:2 71:3 (סֶלַע), Est.9:29, I Est.8:78 (82), Sir.43:1, 8, 1Ma.9:14 * ;] a solid body; __(a) a support, foundation (Arist., al.); metaphorically, strength (Psa.17:1-15 70:1-5, 1Mac, ll. with); steadfastness, firmness: τ. πίστεως, Col.2:5; __(b) the dome of heaven (believed to be a solid canopy), the firmament (LXX).† (AS)
The KJV translates G4733 in the following manner:
stedfastness (2x)
Full Thayer's lexicon entry
στερέωμα — steréōma
στερέωμα στερεώματος, τό (στερεόω), that which has been made firm;
a. (Vulg.firmamentum) the firmament; so the Sept. for רָקִיעַ, the arch of the sky, which in early times was thought to be solid, Gen 1:6-8; Eze 1:22-26; Sir 43:1 (cf. B. D. (especially American edition) under the word ); a fortified place, 1Es 8:78 (80).
b. that which furnishes a foundation; on which a thing rests firmly, support: Aristotle, partt. an. 2, 9, 12, p. 655{a}, 22; κύριος στερέωμα μου, Psa 17:3.
c. firmness, steadfastness: τῆς πίστεως, Col 2:5 (some take it here metaphorically in a military sense, solid front; cf. Lightfoot at the passage (per contra Meyer)).
1 occurrence