2 definitions found From WordNet (r) 2.0 [wn]: adamantine adjective 1: consisting of or having the hardness of adamant 2: having the hardness of a diamond 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 tendancy" [syn: {adamant}, {inexorable}, {intransigent}] From The Collaborative International Dictionary of English v.0.44 [gcide]: Adamantine \Ad'a*man"tine\, adjective [L. adamantinus, Gr. ?.] 1. Made of adamant, or having the qualities of adamant; incapable of being broken, dissolved, or penetrated; as, adamantine bonds or chains. 2. (Min.) Like the diamond in hardness or luster.

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