Q definition and meaning | Collins English Dictionary (2025)

COBUILD frequency band

Q

also q (kj ) (plural Q's, q's )

1.variable noun A1

Q is the seventeenth letter of the English alphabet.

2.

Q or q is used as an abbreviation for words beginning with q, such as 'question' or 'queen'.

Q: Should I dress up or dress down on the first date? A: It depends.

Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers

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COBUILD frequency band

q in British English 1

or Q (kjuː )

nounWord forms: plural q's, Q's or Qs

1.

the 17th letter and 13th consonant of the modern English alphabet

2.

a speech sound represented by this letter, in English usually a voiceless velar stop, as in unique and quick

Collins English Dictionary. Copyright © HarperCollins Publishers

COBUILD frequency band

q in British English 2

symbol for

quintal

Collins English Dictionary. Copyright © HarperCollins Publishers

quintal in British English

(ˈkwɪntəl )

noun

1.

a unit of weight equal to 100 pounds

2.

a unit of weight equal to 100 kilograms

Collins English Dictionary. Copyright © HarperCollins Publishers

COBUILD frequency band

Q in British English

symbol for

1. chess

queen

2.

question

3. physics

heat

abbreviation for

4. messaging & social media

queue

Collins English Dictionary. Copyright © HarperCollins Publishers

COBUILD frequency band

q. in British English

abbreviation for

1.

quart

2.

quarter

3.

quarterly

Collins English Dictionary. Copyright © HarperCollins Publishers

COBUILD frequency band

Q. in British English

abbreviation for

1.

quartermaster

2. Also: qWord forms: plural Qq, qq

quarto

3.

Queen

4.

question

Collins English Dictionary. Copyright © HarperCollins Publishers

COBUILD frequency band

Q in American English 1

(kju )

noun

Electronics

the ratio of energy stored to energy lost in a component or substance

: often called Q factor

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Word origin

q(uality factor)

COBUILD frequency band

Q in American English 2

1.

farthing

2.

Quebec

3.

Queen

4. Chess

queen

5.

quetzal

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

Word origin

(sense 1) L quadrans

COBUILD frequency band

Q in American English 3

Physics

electric charge

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

COBUILD frequency band

q in American English 1

(kju ) or Q (kju )

nounWord forms: plural Q's or q's

1.

the seventeenth letter of the English alphabet: via Latin from the early Greek koppa, a borrowing from the Phoenician

2.

any of the speech sounds that this letter represents, as, in English words, where it is typically followed by u (except in words borrowed from Arabic), the (kw) of queen or (k) of conquer

3.

a type or impression for q or Q

4.

the seventeenth in a sequence or group

5.

an object shaped like Q

adjective

6.

of q or Q

7.

seventeenth in a sequence or group

8.

shaped like Q

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

COBUILD frequency band

q in American English 2

1.

quart

2.

quarter

3.

quarterly

4.

quarto

5.

query

6.

question

7.

quintal

8.

quire

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.

COBUILD frequency band

Q in American English

(kjuː) or q (kjuː)

nounWord forms: plural Q's or Qs, q's or qs

1.

the 17th letter of the English alphabet, a consonant

2.

any spoken sound represented by the letter Q or q, as in quick, acquit, or Iraq

3.

something having the shape of a Q

4.

a written or printed representation of the letter Q or q

5.

a device, as a printer's type, for reproducing the letter Q or q

Most material © 2005, 1997, 1991 by Penguin Random House LLC. Modified entries © 2019 by Penguin Random House LLC and HarperCollins Publishers Ltd

COBUILD frequency band

Q in American English 1

abbreviation

1.

quarterly

2.Chess

queen

Most material © 2005, 1997, 1991 by Penguin Random House LLC. Modified entries © 2019 by Penguin Random House LLC and HarperCollins Publishers Ltd

COBUILD frequency band

Q in American English 2

symbol

1.

the 17th in order or in a series, or, when I is omitted, the 16th

2.(sometimes lc)

the medieval Roman numeral for 500

Compare Roman numerals

3.Biochemistry

glutamine

4.Physics

heat

5.Thermodynamics

a unit of heat energy, equal to 1018 British thermal units (1.055 × 1021 joules)

6. Also called: Q-factor Electronics

the ratio of the reactance to the resistance of an electric circuit or component

7.(in Biblical criticism)

the symbol for material common to the Gospels of Matthew and Luke that was not derived from the Gospel of Mark

Most material © 2005, 1997, 1991 by Penguin Random House LLC. Modified entries © 2019 by Penguin Random House LLC and HarperCollins Publishers Ltd

COBUILD frequency band

q. in American English

abbreviation

1.

farthing

2.

quart; quarts

3.

query

4.

question

5.

quintal

6.

quire

Most material © 2005, 1997, 1991 by Penguin Random House LLC. Modified entries © 2019 by Penguin Random House LLC and HarperCollins Publishers Ltd

Word origin

[(def. 1) ‹ L quadrāns]

COBUILD frequency band

Q. in American English

abbreviation

1.

quarto

2.

Quebec

3.

Queen

4.

question

5.(in Guatemala)

quetzal; quetzals

Most material © 2005, 1997, 1991 by Penguin Random House LLC. Modified entries © 2019 by Penguin Random House LLC and HarperCollins Publishers Ltd

Word lists with

q

text messaging international car registration letters abbreviations and symbols

Q definition and meaning | Collins English Dictionary (2025)
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