1. Métal d'un jaune brillant, dense, très ductile, inaltérable à l'air et à l'eau et qui a une très grande valeur commerciale. (Élément chimique de symbole Au, de numéro atomique 79, de masse atomique 196,97.)
2. Alliage de ce métal avec d'autres métaux (argent, cuivre, nickel, zinc, etc.), utilisé en bijouterie, en dentisterie, en orfèvrerie, etc. : Or jaune, or blanc.
3. Monnaie d'or : Il demande à être payé en or.
4. Ornement, décoration en or : Un vase avec des ors noircis.
5. Symbole littéraire de la richesse, de l'opulence : La soif de l'or.
6. Ce qui a un mérite exceptionnel, un grand prix, une grande valeur (surtout dans les locutions d'or, en or) : Le silence est d'or.Une affaire en or.
7.Littéraire. Couleur jaune brillant : L'or du couchant.
8. Un des deux métaux héraldiques (indiqué en gravure par un pointillé).
or
adjectif invariable
De la couleur de l'or.
Expressions avec or
or
nom masculin
Âge d'or,
temps heureux d'une civilisation ; époque qui voit dans un domaine déterminé une production particulièrement brillante.
À prix d'or,
très cher.
Couvrir quelqu'un d'or,
lui donner beaucoup d'argent, le payer très cher.
Jaune d'or,
qui a l'éclat orangé de l'or.
L'or blanc,
la neige, les sports d'hiver.
L'or noir,
le pétrole.
L'or vert,
l'agriculture, l'agroalimentaire, les exportations agricoles.
On écrit étalon-or, avec un trait d'union, ou étalon or, sans trait d'union. La graphie avec trait d'union, étalon-or, est aujourd'hui la plus fréquente. Franc-or s'écrit toujours avec trait d'union.
ACCORD
Or, employé comme adjectif de couleur, reste invariable : des bordures or ; des bannières sang et or.
Citations avec or
Alphonse Allais (Honfleur 1854-Paris 1905) La soif de l'or - auri sacra fames - est devenue tellement impérieuse au jour d'aujourd'hui, que beaucoup de gens n'hésitent pas, pour se procurer des sommes, à employer le meurtre, la félonie, parfois même l'indélicatesse. Rose et vert pomme, Ollendorf
Anonyme Le cœur d'un homme vaut tout l'or d'un pays. Li cuers d'un home vaut tot l'or d'un païs. Chanson de geste
André Breton (Tinchebray, Orne, 1896-Paris 1966) Je cherche l'or du temps. Introduction au Discours sur le peu de réalité , Gallimard
Samuel Butler (Langar, Nottinghamshire, 1835-Londres 1902) Bien que la sagesse ne puisse s'acquérir avec de l'or, elle peut encore moins s'acquérir sans lui. Though wisdom cannot be gotten for gold, still less can it be gotten without it. Notebooks
Héraclite, d'Éphèse (vers 550-vers 480 avant J.-C.) Les ânes préféreraient la paille à l'or. Fragment, 9 Diels (traduction Battistini)
Jean de La Fontaine (Château-Thierry 1621-Paris 1695) […] Ne possédait pas l'or, mais l'or le possédait. Fables, L'Avare qui a perdu son trésor
Jean de La Fontaine (Château-Thierry 1621-Paris 1695) Ni l'or ni la grandeur ne nous rendent heureux. Philémon et Baucis
Jean Racine (La Ferté-Milon 1639-Paris 1699) Comment en un plomb vil l'or pur s'est-il changé ? Athalie, III, 7, Joad
Jean de Rotrou (Dreux 1609-Dreux 1650) Et que l'or est un charme à la vertu fatal ! Laure persécutée, II, 7
Virgile en latin Publius Vergilius Maro (Andes, aujourd'hui Pietole, près de Mantoue, 70 avant J.-C.-Brindes 19 avant J.-C.) Monstrueuse faim de l'or ! L'Énéide, III, 57 Auri sacra fames !
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