prime

principal, excellent, idéal

Le meilleur, le plus important ou particulièrement adapté à un usage.

En anglais simple : Best, most important, or especially suitable for a purpose.

• The shop is in a prime location.
• Safety is our prime concern.
• This is a prime example of careful planning.

Synonymes : excellent, main, ideal

Expressions courantes : prime example, prime location, prime suspect, prime concern

premier

Qualifie un entier supérieur à un, divisible sans reste uniquement par un et par lui-même.

En anglais simple : Describing a whole number greater than one that divides exactly only by one and itself.

• Seven is a prime number.
• Find the prime factors of twelve.
• Is ninety-seven prime?

Synonymes : indivisible

Contraires : composite

Expressions courantes : prime number, prime factor, prime integer

premier, initial

Qui vient en premier dans le temps, dans un ordre ou dans un système.

En anglais simple : Coming first in time, order, or a system.

• The prime meridian passes through Greenwich.
• The philosopher searched for a prime cause of all motion.
• A prime mover starts the chain of events.

Synonymes : first, initial, original

Expressions courantes : prime meridian, prime mover, prime cause

apogée, meilleure période

Meilleure période de la vie d’une personne ou du développement d’une chose.

En anglais simple : The best part or period of someone’s life or of something’s development.

• She is in her prime.
• The player was past his prime.
• He spent the prime of his career abroad.

Comment l'utiliser : in someone’s prime (The singer was in her prime when she recorded this album.); past someone’s prime (The boxer is past his prime.)

Synonymes : peak, heyday

Expressions courantes : in someone’s prime, past someone’s prime, prime of life

nombre premier

Entier supérieur à un, divisible sans reste uniquement par un et par lui-même.

En anglais simple : A whole number greater than one that divides exactly only by one and itself.

• Two is the smallest prime.
• The class listed all primes below twenty.
• Can you find a larger prime?

Synonymes : prime number

Expressions courantes : a prime, odd prime, large prime

amorce

Matière qui prépare quelque chose à fonctionner, notamment en déclenchant son allumage.

En anglais simple : Something used to prepare another thing for use or action.

• The gunner added a prime to the charge.
• A damp prime failed to ignite.
• The spark lit the prime first.

Synonymes : primer

Expressions courantes : a prime, powder prime, apply a prime

barrage

Au backgammon, suite de cases occupées qui empêche les pions adverses de passer.

En anglais simple : In backgammon, a row of occupied spaces that stops the other player’s pieces from moving past.

• She built a prime across six points.
• His pieces were trapped behind the prime.
• A lucky roll helped me break the prime.

Expressions courantes : build a prime, six-point prime, break a prime

prime

Signe ′ placé après des nombres ou des lettres dans les mesures et en mathématiques.

En anglais simple : The mark ′ used after numbers or letters in measurements and mathematics.

• A prime after a number can mean feet.
• Write a prime after the letter to mark its derivative.
• Two primes can indicate a second derivative.

Synonymes : prime mark

Expressions courantes : prime symbol, double prime, single prime