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prime1 British & World English

Of first importance; main

prime2 British & World English

Make (something) ready for use or action, in particular:

prime1 English Thesaurus

his prime reason for going to America

prime2 English Thesaurus

he grabbed a gun from a nearby rack and primed it

prime rib British & World English

A roast or steak cut from the seven ribs immediately before the loin

sub-prime British & World English

Denoting or relating to credit or loan arrangements for borrowers with a poor credit history, typically having unfavourable conditions such as high interest rates

prime cost British & World English

The direct cost of a commodity in terms of the materials and labour involved in its production, excluding fixed costs

prime lens British & World English

A lens of fixed focal length

prime mover British & World English

A person who is chiefly responsible for the creation or execution of a plan

prime rate British & World English

The lowest rate of interest at which money may be borrowed commercially

prime time British & World English

The time at which a radio or television audience is expected to be at its highest

prime number British & World English

A number that is divisible only by itself and 1 (e.g. 2, 3, 5, 7, 11)

prime contract British & World English

A contract whose requirements are partly fulfilled by the awarding of subcontracts

prime meridian British & World English

A planet’s meridian adopted as the zero of longitude

prime minister British & World English

The head of an elected government; the principal minister of a sovereign or state

prime vertical British & World English

A great circle in the celestial sphere passing through the zenith and the east and west points of the horizon

prime the pump British & World English

Stimulate the growth or success of something by supplying it with money

cut someone off in their prime British & World English

Bring someone’s life or career to an abrupt end while they are at the peak of their abilities

Mersenne number British & World English

A number of the form 2p−1, where p is a prime number. Such a number which is itself prime is also called a Mersenne prime

Mersenne prime in Mersenne number British & World English

A number of the form 2p−1, where p is a prime number. Such a number which is itself prime is also called a Mersenne prime

prime the pump in prime2 British & World English

Stimulate the growth or success of something by supplying it with money

PMQs British & World English

(In the UK Parliament) a session, held every Wednesday at midday when the House of Commons is sitting, during which the Prime Minister answers questions from MPs

cut someone off or down in their prime in cut British & World English

Bring someone’s life or career to an abrupt end while they are at the peak of their abilities