adamantine

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Related to Adamantine spar: vitreous, corundum, diamond, resinous

ad·a·man·tine

 (ăd′ə-măn′tēn′, -tīn′, -tĭn)
adj.
1. Made of or resembling adamant.
2. Having the hardness or luster of a diamond.
3. Unyielding; inflexible: "If there is one dominant trait that emerges from this account, it is adamantine willpower" (Eugene Linden).

adamantine

(ˌædəˈmæntaɪn)
adj
1. very hard; unbreakable or unyielding
2. having the lustre of a diamond

ad•a•man•tine

(ˌæd əˈmæn tin, -tɪn, -taɪn)

adj.
1. utterly unyielding or firm; hard.
2. like a diamond in luster.
[1200–1250; Middle English < Latin adamantinus < Greek adamántinos. See adamant, -ine1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.adamantine - consisting of or having the hardness of adamantadamantine - consisting of or having the hardness of adamant
2.adamantine - having the hardness of a diamondadamantine - having the hardness of a diamond  
hard - resisting weight or pressure
3.adamantine - impervious to pleas, persuasion, requests, reason; "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 tendency"
inflexible - incapable of change; "a man of inflexible purpose"

adamantine

adjective
Translations

adamantine

[ˌædəˈmæntaɪn] ADJadamantino

adamantine

adj (liter, lit)diamanten (liter); (fig)hartnäckig