1. Marque le début d'une suite, d'une série d'éléments de même nature, ordonnée et numérotée : Livre premier.
2. Avec l'article masculin singulier, désigne le jour qui débute le mois : Paris, le premier (1er) août 1982.
3. Classe, dans une série numérotée, l'élément qui marque le début de la série (peut s'employer, sans le nom, avec l'article.) : Habiter au premier (étage).
4. Indique le plus haut, le meilleur rang dans un classement, ce qui correspond à ce rang : Obtenir la première place à un concours ; classe la personne ou la chose qui a obtenu ce rang (considéré comme un nom quand il est employé sans substantif, avec l'article.) : Il est le premier de la classe.
5. Se dit de la personne ou de la chose qui est avant une autre (considéré comme un nom quand il est employé sans substantif, avec l'article.) : Vous êtes la première à franchir la porte.
6. Qui n'a pas eu de précédent (dans son genre) ou qui n'a pas eu de prédécesseur : Il a été mon premier ami dans cette ville.
7. Qui se situe, survient, se rencontre avant tout autre : À la première occasion.
8. Qui se situe au début de quelque chose, au commencement d'une action, d'une évolution, d'une série (surtout pluriel) : Les premières chaleurs.
9. Indique le plus haut niveau dans une hiérarchie (grade, classification, etc.) : C'est du premier choix ; dans certaines classifications professionnelles : Premier violon ; le superlatif, le plus haut niveau, le plus haut point : Objets de première nécessité.
10. Qui est fondamental, essentiel, capital : La qualité première d'un chef.
12. Se dit d'un entier naturel n'ayant pour diviseurs que 1 et lui-même ou d'un entier relatif n'ayant pour diviseurs que 1, − 1, lui-même et son opposé.
première
nom féminin
1. Catégorie la plus chère dans certains moyens de transports.
2. Première représentation d'une pièce de théâtre, d'un spectacle, à laquelle sont en général invités les critiques, les amis.
Alpinisme
3. Première ascension d'une montagne, d'une arête, d'un versant, etc.
Automobile, cycles et motocycles
4. Première vitesse.
Chaussure
5. Partie du dessous de la chaussure sur laquelle repose directement le pied.
Chorégraphie
6. La première des cinq positions fondamentales.
Couture
7. Personne qualifiée qui, dans une maison de couture, dirige un atelier.
Enseignement
8. Classe de l'enseignement secondaire précédant la terminale.
Éléments premiers entre eux d'un anneau unitaire A,
éléments de A qui ont pour seuls diviseurs communs les éléments inversibles de A.
En premier,
qui a la première classe de son grade : Agent de conduite en premier ; avant tout le reste, d'abord.
Jeune premier, jeune première,
acteur, actrice jouant les rôles d'amoureux.
Le premier venu,
qui que ce soit, une personne prise au hasard.
Mon premier,
formule par laquelle on expose le premier élément d'une charade.
Nombres premiers entre eux dans ℕ (respectivement dans ℤ),
éléments de ℕ (respect. de ℤ) ayant pour seul diviseur commun 1 (respect. 1 et − 1). (Le plus grand nombre premier connu est, depuis 1997, le nombre de formule 22 976 221− 1, déterminé par l'Américain Gordon Spence.)
Polynôme premier,
synonyme de fraction irréductible.
Synonyme :
fraction irréductible.
Polynôme premier,
synonyme de polynôme irréductible.
Synonyme :
polynôme irréductible.
Polynômes premiers entre eux,
polynômes dont les seuls diviseurs communs sont les polynômes constants.
Vérité première,
vérité qui s'impose d'elle-même à l'esprit.
première
nom féminin
Familier. De première,
exceptionnel, remarquable.
Une (grande) première,
événement important et original dans un domaine quelconque : Cette greffe est une grande première chirurgicale.
Enseignement
Première supérieure,
classe des lycées destinée à la préparation de l'École normale supérieure.
Imprimerie
Côté de première,
forme ou côté d'une feuille où se trouve la première page d'un cahier.
Difficultés de premier
ORTHOGRAPHE
1er, 1re. On abrège le féminin en 1re (sans noter le e accent grave).
Jamais de trait d'union dans les dates (le 1er septembre), sauf quand il s'agit d'une fête : le 1er-Mai.
On écrit le Premier ministre, avec une majuscule à Premier et une minuscule à ministre. De même : le Premier consul (Bonaparte).
ACCORD
Les premiers arrivés. Premier s'accorde quand il est employé adverbialement dans le sens de « en premier » : les premiers arrivés, les premières arrivées ; les tout premiers arrivés ; les toutes premières arrivées. (Attention, tout reste invariable au masculin mais s'accorde au féminin ; premier s'accorde dans tous les cas.)
Citations avec premier
Bible Beaucoup de premiers seront derniers, et de derniers seront premiers. Évangile selon saint Matthieu, XIX, 30
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