Extended Strong's Greek Lexicon (Abbott-Smith based)
strong
Usage: στερεός, -ά, -όν [in LXX: Num.8:4 (מִקְשָׁה); σ. πέτρα, Isa.5:28 (צַר), etc. ;] hard, firm, solid: τροψή, Heb.5:12, 14; θεμέλιος, figuratively, 2Ti.2:19. Metaphorical, __(a) in bad sense, hard, cruel (Hom., al.); __(b) in good sense, steadfast, firm: τ. πίστει, 1Pe.5:9.† (AS)