of the man of adamant meaning
Wiktionary(0.00 / 0 votes)Rate this definition: 1  adamant(Noun) A rock or mineral held by some to be of impenetrable hardness; a name given to the diamond and other substances of extreme hardness. 2  adamant(Noun) An embodiment of impregnable hardness. 3  adamant(Noun) A magnet; a lodestone.