Etymology and origin of the Latin word adamantinus
- Confidence
- Established
- Formation
- Borrowing
- First attested
- 96–55 BC, Lucretius
- Borrowed from
- Ancient Greek ἀδαμάντινος
- Ultimate origin
- Ancient Greek (ἀδαμάντινος)
Forms
adamantinus (feminine adamantina, neuter adamantinum); first/second-declension adjective[1]
Etymology
It is borrowed from Ancient Greek ἀδαμάντινος (adamántinos, “of adamant, hard as adamant”),[1][2][3] though the OLD analyses it as formed from adamās with the suffix -īnus.[4] The Greek adjective is formed from ἀδάμας (adámas, “unbreakable; adamant”).[5]
Earliest recorded meaning
It is first found in Lucretius,[3] who speaks of adamantina saxa, stones used to defying blows, which the OLD takes as diamonds.[4]
Semantic evolution
The poets used it of the hardest metal of legend: Horace has Mars clad in an adamantine tunic and the adamantine nails that Necessity drives in, Propertius the adamantine yoke under which the Colchian woman drove the fire-breathing bulls.[4][6] Pliny the Elder used it of a hardness like that of the diamond, and Apuleius of the firmness of walls.[4] L&S give the poetic sense “inflexible, invincible”.[6]
Christian writers have adamantine chains and an adamantine nail,[7] and Ecclesiastical Latin uses it for “unconquered, unbreakable”.[8] Medieval British writers used it literally and, figuratively, for something lasting.[9] English adopted it about 1200 as adamantine.[5]
Timeline
- 96–55 BC – Lucretius speaks of adamantine stones.[4][3]
- 65–8 BC – Horace dresses Mars in an adamantine tunic.[4][3]
- 57/46–12 BC – Propertius writes of an adamantine yoke.[4][3]
- 23/24–79 AD – Pliny the Elder compares a stone's hardness to the diamond's.[4][3]
- c. 1200 – English borrows it as adamantine.[5]
Meanings
Adjective
- Made of adamant or steel, the hardest of substances; as hard as adamant.[4][6]
- Like diamond;[4] adamantina saxa, diamonds.[4]
- (figurative) Inflexible, unbreakable, invincible.[6][8]
Related words
- English adamantine
References
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ Saalfeld, Günther Alexander (1874), Index Graecorum vocabulorum in linguam latinam translatorum, Berlin: Weidmann
- ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b c d e f g h i j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
- ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
- ^ Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
Related etymologies
- saccus · also from Greek
- asparagus · also from Greek
- asphodelus · also from Greek
- astrum · also from Greek
- astronomia · also from Greek
- astrologia · also from Greek
- hydra · also from Greek
- etymologia · also from Greek
Cite this entry
“Adamantinus.” Etymologically, 20 Oct. 2026, etymologically.com/la/adamantinus. Accessed 21 Oct. 2026.
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