Usage: 2 forms in 2 verses
Form Translated As     In Verse(s)
αδαμαντίνω adamantine LXX.Jer.17.1
αδαμαντίνου of adamantine LXX.Amos.7.7

Liddell-Scott-Jones

ἀδαμάντινος (adamantinos) adamantine G:A

ἀδαμάντινος, η, ον,

adamantine, of steel, [Refs 5th c.BC+]; . κερκίδες, of the Μοῖραι, [Refs 4th c.AD+]

__2 metaphorically, hard as adamant, οὐδεὶς ἂν γένοιτο.. οὕτως ., ὃς ἂν.. [Refs 5th c.BC+]; οὐκ . ἐστίν, of a girl, [Refs 3rd c.BC+]. adverb -νως[Refs 5th c.BC+]