στερέωμα, -τος, τό
(< στερεόω), [in LXX: Ge 1:6 ff., Ps 18 (19):1150:1, Ez 1:22-2610:113:5, Da LXX, TH 3:(56), 12:3 (רָקִיעַ), De 33:26 (שׁחק), Ps 17 (18):270 (71):3 (סֶלַע), Es 9:29, I Es 8:78 (82), Si 43:1, 8, I Mac 9:14 *;]
a solid body;
(a) a support, foundation (Arist., al.); metaph., strength (Ps 1770, I Mac, ll. c.); steadfastness, firmness: τ. πίστεως, Col 2:5;
(b) the dome of heaven (believed to be a solid canopy), the firmament (LXX).†