adamantine /ˌædəˈmæntaɪn/adjective 7noun 1forms 2 adjective7 •Made of adamant (“an unspecified mineral or rock of virtually impenetrable hardness”). •(figurative) Difficult to defeat or prevail over; unshakable, unyielding.For two hours they stand; [François Claude Amour, marquis de] Bouillé's sword glittering in his hand, adamantine resolution clouding his brows; […] — 1837 •(figurative) Of a person: refusing to change one's mind; obstinate, stubborn.I thought this last information would soften the young man, but he was adamantine. He informed me that it was against all bank rules for a woman to draw from her husband's deposit without his order. — 1871 •(figurative) Incapable of being broken, dissolved, or penetrated; impenetrable, unbreakable.adamantine bondsadamantine chains •Like diamond in lustre; bright, lustrous, shiny; also, of a lustre: like that of a mineral with a high refractive index such as diamond.Raspite, a new dimorphous form of lead tungstate, is found on some of the stolzite specimens as brownish or yellow monoclinic crystals with a strong adamantine lustre. — 1898 •Synonym of adamant. •(figurative, no longer used) Having the quality of attracting or drawing; attractive, magnetic.Embravvne your soft-skind enclosure vvith Adamantine dust, that it may dravve nothing but steele vnto it. — 1593 noun[before a noun]1 •Synonym of adamantium (“a fictional metal which is indestructible or nearly so”). formsmore adamantine · most adamantine
