prime

[ prahym ]

adjective

1. of the first importance; demanding the fullest consideration:

   a prime requisite.

   Synonyms: primary

2. of the greatest relevance or significance:

   a prime example.

3. of the highest eminence or rank:

   the prime authority on Chaucer.

4. of the greatest commercial value:

   prime building lots.

5. first-rate:

   This ale is prime!

6. (of meat, especially of beef ) noting or pertaining to the first grade or best quality:

   prime ribs of beef.

7. first in order of time, existence, or development; earliest; primitive.
8. basic; fundamental:

   the prime axioms of his philosophy.

9. Mathematics. (of any two or more numbers) having no common divisor except unity:

   The number 2 is prime to 9.

noun

1. the most flourishing stage or state.
2. the time of early manhood or womanhood:

   the prime of youth.

3. the period or state of greatest perfection or vigor of human life:

   a man in his prime.

4. the choicest or best part of anything.
5. (especially in the grading of U.S. beef ) a grade, classification, or designation indicating the highest or most desirable quality.
6. the beginning or earliest stage of any period.
7. the spring of the year.
8. the first hour or period of the day, after sunrise.
9. Banking. prime rate.
10. Ecclesiastical. the second of the seven canonical hours or the service for it, originally fixed for the first hour of the day.
11. Mathematics.
    1. prime number.
    2. one of the equal parts into which a unit is primarily divided.
    3. the mark (′) indicating such a division:

       a, a′.

12. Fencing. the first of eight defensive positions.
13. Music.
    1. unison ( def 2 ).
    2. (in a scale) the tonic or keynote.
14. Linguistics. any basic, indivisible unit used in linguistic analysis.
15. Metallurgy. a piece of tin plate free from visible defects.

verb (used with object)

, primed, prim·ing.

1. to prepare or make ready for a particular purpose or operation.
2. to supply (a firearm) with powder for communicating fire to a charge.
3. to lay a train of powder to (a charge, mine, etc.).
4. to pour or admit liquid into (a pump) to expel air and prepare for action.
5. to put fuel into (a carburetor) before starting an engine, in order to insure a sufficiently rich mixture at the start.
6. to cover (a surface) with a preparatory coat or color, as in painting.
7. to supply or equip with information, words, etc., for use:

   The politician was primed by his aides for the press conference.

8. to harvest the bottom leaves from (a tobacco plant).

verb (used without object)

, primed, prim·ing.

1. (of a boiler) to deliver or discharge steam containing an excessive amount of water.
2. to harvest the bottom leaves from a tobacco plant.

prime

/ praɪm /

adjective

1. prenominal first in quality or value; first-rate
2. prenominal fundamental; original
3. prenominal first in importance, authority, etc; chief
4. maths
   1. having no factors except itself or one

      x² + x + 3 is a prime polynomial

   2. foll by to having no common factors (with)

      20 is prime to 21

5. finance having the best credit rating

   prime investments

noun

1. the time when a thing is at its best
2. a period of power, vigour, etc, usually following youth (esp in the phrase the prime of life )
3. the beginning of something, such as the spring
4. maths short for prime number
5. linguistics a semantically indivisible element; minimal component of the sense of a word
6. music
   1. unison
   2. the tonic of a scale
7. RC Church the second of the seven canonical hours of the divine office, originally fixed for the first hour of the day, at sunrise
8. the first of eight basic positions from which a parry or attack can be made in fencing

verb

1. to prepare (something); make ready
2. tr to apply a primer, such as paint or size, to (a surface)
3. tr to fill (a pump) with its working fluid before starting, in order to improve the sealing of the pump elements and to expel air from it before starting
4. tr to increase the quantity of fuel in the float chamber of (a carburettor) in order to facilitate the starting of an engine
5. tr to insert a primer into (a gun, mine, charge, etc) preparatory to detonation or firing
6. intr (of a steam engine or boiler) to operate with or produce steam mixed with large amounts of water
7. tr to provide with facts, information, etc, beforehand; brief

Derived Forms

• ˈprimely, adverb
• ˈprimeness, noun

Other Words From

• primeness noun
• non·prime adjective
• re·prime verb (used with object) reprimed repriming
• self-primed adjective
• un·primed adjective
• well-primed adjective

Word History and Origins

Origin of prime¹

First recorded before 1000; 1910–15 prime fordef 5; (adjective) Middle English (from Old French prim ), from Latin prīmus first (superlative corresponding to prior prior ¹ ); (noun) in part derivative of the adjective; in part continuing Middle English prim(e) “first canonical hour,” Old English prim, from Latin prīma (hōra) “first (hour)”; (verb) apparently derivative of the adjective

Word History and Origins

Origin of prime¹

(adj) C14: from Latin prīmus first; (n) C13: from Latin prīma ( hora ) the first (hour); (vb) C16: of uncertain origin, probably connected with n

Idioms and Phrases

• past one's prime

Synonym Study

Prime, primeval, primitive have reference to that which is first. Prime means first in numerical order or order of development: prime meridian; prime cause. Primeval means belonging to the first or earliest ages: the primeval forest. Primitive suggests the characteristics of the origins or early stages of a development, and hence implies the simplicity of original things: primitive tribes, conditions, ornaments, customs, tools.

Example Sentences

On Wednesday, the prime minister's press secretary told reporters the 5% threshold set by the previous government "remains the same".

From BBC

It came after Conservative leader Kemi Badenoch pressed Sir Keir Starmer during Prime Minister's Questions over whether the cap would be kept in place, with the PM sidestepping the question.

From BBC

The appointment was greeted with joy by two far-right ministers in Prime Minister Benjamin Netanyahu’s government.

From BBC

Netanyahu’s decision to nominate a hardline settler leader for Israeli ambassador to Washington three days after Trump’s election also indicates that the prime minister believes the next administration will be receptive to right-wing arguments.

From BBC

“It’s a question of the prime movers, the director, the star. There are so many heavy pieces that have to be lifted and put into place, and if one of them isn’t ready, then it’s going to have to wait.”

From Los Angeles Times

Related Words

• heyday