utterly unyielding in attitude or opinion in spite of all appeals, urgings, etc.
too hard to cut, break, or pierce.
any impenetrably or unyieldingly hard substance.
a legendary stone of impenetrable hardness, formerly sometimes identified with the diamond.
I was adamant that she was too young and took the newspaper to my parents for further authority.
Spilling My Family’s Secrets Frances Osborne May 20, 2010
The Guardian is adamant that neither Davies nor Hill has paid any police officer for any information.
The Appalling Probe on The Guardian Alex Massie September 16, 2011
Blankfein & Co. was adamant that there was no conflict at all.
The Hearing From Hell Tunku Varadarajan April 26, 2010
She is adamant about the difference between online dating and her own bespoke matches.
Anna Gristina, the Accused Mommy Madam, and Her Matchmaking Defense Tracy Quan June 24, 2012
Despite this constant pressure, the Justices—the older ones, at least—are adamant.
Supreme Court Releases Same-Day Audio, But Forget TV Nick Summers March 29, 2012
Iron and adamant are not stronger than these arguments; nor can any one attempt an answer without exposing his feebleness.
Charles Sumner; his complete works, volume 6 (of 20) Charles Sumner
Virtue is an adamant that is sacred and secure from all their efforts.
Imogen William Godwin
But who would force the soul, tilts with a straw / Against a champion cased in adamant.
Dictionary of Quotations from Ancient and Modern, English and Foreign Sources James Wood
“Oh, do let’s stay till it’s all done,” she urged, but Bruce and Elinor were adamant.
Miss Pat at School Pemberton Ginther
Acts of Parliament are venerable; but if they correspond not with the writing on the ‘adamant Tablet,’ what are they?
Past and Present Thomas Carlyle
unshakable in purpose, determination, or opinion; unyielding
a less common word for adamantine (sense 1)
any extremely hard or apparently unbreakable substance
a legendary stone said to be impenetrable, often identified with the diamond or loadstone
late 14c., “hard, unbreakable,” from adamant (n.). Figurative sense of “unshakeable” first recorded 1670s. Related: Adamantly; adamance.
mid-14c., from Old French adamant and directly from Latin adamantem (nominative adamas) “adamant, hardest iron, steel,” also figuratively, of character, from Greek adamas (genitive adamantos) “unbreakable, inflexible” metaphoric of anything unalterable, also the name of a hypothetical hardest material, perhaps literally “invincible,” from a- “not” + daman “to conquer, to tame” (see tame (adj.)), or else a word of foreign origin altered to conform to Greek.
Applied in antiquity to white sapphire, magnet (perhaps via confusion with Latin adamare “to love passionately”), steel, emery stone, and especially diamond (see diamond). The word was in Old English as aðamans “a very hard stone.”
(Heb. shamir), Ezek. 3:9. The Greek word adamas means diamond. This stone is not referred to, but corundum or some kind of hard steel. It is an emblem of firmness in resisting adversaries of the truth (Zech. 7:12), and of hard-heartedness against the truth (Jer. 17:1).
utterly unyielding in attitude or opinion in spite of all appeals, urgings, etc. too hard to cut, break, or pierce. any impenetrably or unyieldingly hard substance. a legendary stone of impenetrable hardness, formerly sometimes identified with the diamond. adjective unshakable in purpose, determination, or opinion; unyielding a less common word for adamantine (sense 1) noun […]
a white crystalline alicyclic hydrocarbon, C 10 H 16 , consisting of four fused cyclohexane rings, with the carbon atoms arranged as in the diamond lattice.
- Adamantine membrane
adamantine membrane adamantine membrane ad·a·man·tine membrane (ād’ə-mān’tēn’, -tīn’, -tĭn) n. See dental cuticle.
adamantinoma adamantinoma ad·a·man·ti·no·ma (ād’ə-mān’tə-nō’mə) n. pl. ad·a·man·ti·no·mas or ad·a·man·ti·no·ma·ta (-mə-tə) See ameloblastoma.