meaning of adamantine
1. Made of adamant, or having the qualities of adamant; incapable of being broken, dissolved, or penetrated; as, adamantine bonds or chains.
2. Like the diamond in hardness or luster.
3. not capable of being swayed or diverted from a course; unsusceptible to persuasion; "he is adamant in his refusal to change his mind"; "Cynthia was inexorable; she would have none of him"- W. Churchill; "an intransigent conservative opposed to every liberal
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