Jump To:

• 'd
  'd

  contraction of had:
• D
  D

  noun

  the fourth letter of the English alphabet, a consonant.
• D-
  D-

  (of a molecule) having a configuration resembling the dextrorotatory isomer of glyceraldehyde: always printed as a small capital, roman character.
• d'
  d'

  preposition

  de (used in French names as an elided form ofde ).
• d-
  d-

  dextrorotatory; dextro- (distinguished from l-).
• d.
  d.

  abbreviation

  (in prescriptions) give.
• D.
  D.

  abbreviation

  day.
• d
  d

  symbol

  physics density or relative density

'd

¹ American  

1. contraction of had:

   I was glad they'd gone.

2. contraction of did:

   Where'd they go?

3. contraction of should or would:

   He'd like to go. I'd like to remind you of your promise.

4. contraction of -ed:

   She OK'd the plan.

---

D ² American  

[dee] / di /

Or d

noun

• D's,
  plural
• Ds,
  plural
• d's,
  plural
• ds
  plural

1. the fourth letter of the English alphabet, a consonant.

2. any spoken sound represented by the letter D or d, as in dog, ladder, ladle, or pulled.

3. something having the shape of a D .

4. a written or printed representation of the letter D or d.

5. a device, as a printer's type, for reproducing the letter D or d.

---

D ³ American  

abbreviation

1. Electricity. debye; debyes.

2. deep.

3. depth.

4. Optics. diopter.

5. divorced.

6. Dutch.

---

D ⁴ American  

Symbol.

1. the fourth in order or in a series.

2. (sometimes lowercase) (in some grading systems) a grade or mark, as in school or college, indicating the quality of a student's work as poor or barely passing.

3. (sometimes lowercase) a classification, rating, or the like, indicating poor quality.

4. Music.

   1. the second tone in the scale of C major, or the fourth tone in the relative minor scale, A minor.

   2. a string, key, or pipe tuned to this tone.

   3. a written or printed note representing this tone.

   4. (in the fixed system of solmization) the second tone of the scale of C major, called re.

   5. the tonality having D as the tonic note.

5. (sometimes lowercase) the Roman numeral for 500.

6. Chemistry. deuterium. Also 2H

7. Electricity.

   1. electric displacement.

   2. a battery size for 1.5 volt dry cells: diameter, 1.3 inches (3.3 centimeters); length, 2.4 inches (6 centimeters).

8. Biochemistry. aspartic acid.

9. a symbol for a shoe width size narrower than E and wider than C.

10. a proportional brassiere cup size larger than C.

---

D- ⁵ American  

1. Symbol, Biochemistry. (of a molecule) having a configuration resembling the dextrorotatory isomer of glyceraldehyde: always printed as a small capital, roman character.

---

d' ⁶ American  

preposition

1. de (used in French names as an elided form ofde ).

   Charles Louis d'Albert.

2. di (used in Italian names as an elided form ofdi ).

   Gabriele d'Annunzio.

---

d' ⁷ American  

1. Informal. contraction of do or did before you:

   How d'you like your eggs cooked? D'you go to the movies last night?

---

d- ⁸ American  

Symbol, Chemistry, Biochemistry.

1. dextrorotatory; dextro- (distinguished from l-).

---

d. ⁹ American  

abbreviation

1. (in prescriptions) give.

---

d. ¹⁰ American  

abbreviation

1. British. pence.

---

d. ¹¹ American  

abbreviation

1. date.

2. daughter.

3. day.

4. deceased.

5. deep.

6. degree.

7. delete.

8. Physics. density.

9. depth.

10. deputy.

11. dialect.

12. dialectal.

13. diameter.

14. died.

15. dime.

16. dividend.

17. dollar; dollars.

18. dose.

19. drachma.

---

D. ¹² American  

abbreviation

1. day.

2. December.

3. Democrat.

4. Democratic.

5. Physics. density.

6. Deus.

7. Deuteronomy.

8. Doctor.

9. dose.

10. Dutch.

---

D. ¹ British  

abbreviation

1. politics Democrat(ic)

2. government Department

3. dinar(s)

4. Don (a Spanish title)

5. Duchess

6. Duke

7. (in the US and Canada) Doctor

---

D ² British  

symbol

1. music

   1. a note having a frequency of 293.66 hertz ( D above middle C ) or this value multiplied or divided by any power of 2; the second note of the scale of C major

   2. a key, string, or pipe producing this note

   3. the major or minor key having this note as its tonic

2. chem deuterium

3. maths the first derivative of a function, as in D( x ³ + x ²) = 3 x ² + 2 x

4. physics

   1. dispersion

   2. electric displacement

5. aeronautics drag

6. 1. a semiskilled or unskilled manual worker, or a trainee or apprentice to a skilled worker

   2. ( as modifier ) See also occupation groupings

      D worker

7. 500 See Roman numerals

---

abbreviation

1. Germany (international car registration)

2. 1. informal defence

      I'm playing D in the match this afternoon

   2. informal defensive play

'd ³ British  

contraction

1. would or had

   I'd

   you'd

---

d ⁴ British  

symbol

1. physics density or relative density

2. maths a small increment in a given variable or function: used to indicate a derivative of one variable with respect to another, as in d y /d x

3. chess See algebraic notation

---

d ⁵ British  

/ diː /

noun

1. the fourth letter and third consonant of the modern English alphabet

2. a speech sound represented by this letter, usually a voiced alveolar stop, as in dagger

3. the semicircle on a billiards table having a radius of 11 1/ 2 inches and its straight edge in the middle of the baulk line

---

D ⁶ British  

abbreviation

1. Deutsch: indicating the serial number in the catalogue (1951) of the musical compositions of Schubert made by Otto Deutsch (1883–1967)

---

d. ⁷ British  

abbreviation

1. (in animal pedigrees) dam

2. daughter

3. currency penny or pennies

4. diameter

5. died

6. dinar(s)

7. dollar(s)

8. drachma(s)

---

d Scientific  

1. Abbreviation of diameter

---

Other Word Forms

Noun Inflected Forms

• D's
  plural
• Ds
  plural
• d's
  plural
• ds
  plural

---

Etymology

Origin of d.⁹

From the Latin word dā

Origin of d.¹⁰

From the Latin word denāriī

---

Example Sentences

See Examples For:

'd D D- d' d- d. D. d D's Ds d's ds

“If they had said, ‘We’re going to do this for another 20 years,’ I ‘d have been on board in a heartbeat.”

From Los Angeles Times ● May 27, 2026

But still, one by one, we ’d all burned out.

From Salon ● May 7, 2024

We ’d be fixing the economy, ad- dressing national security issues, and improving education.

From MSNBC ● Sep. 9, 2014

“Well, you ‘d have to know my mom.

From Scientific American ● Jun. 9, 2012

"Well, if we do something really bad and they kick us out of the camp, then they ’d have to — ” "Don’t even think about it, Frankie,” I warned.

From "The Red Umbrella" by Christina Gonzalez

The rail line known as the purple, or the D, was sometimes referred to as the Subway to the Sea.

From Los Angeles Times ● Oct. 21, 2026

In August, I joined Dart's corrections officers as they prepared for an early morning raid on the jail's high security D block.

From BBC ● Oct. 18, 2026

People who avoid dairy should make sure they get enough calcium and vitamin D from other foods.

From The Wall Street Journal ● Oct. 12, 2026

During open-enrollment periods, eligible adults can switch from traditional Medicare to a private Medicare Advantage plan, change from one Medicare Advantage plan to another, and join or change a Medicare Part D prescription-drug plan.

From MarketWatch ● Oct. 9, 2026

I wanted to see Uncle Darnell carrying Vonetta but when we finally saw them, it was Uncle D, the sheriff, and the two bloodhounds.

From "Gone Crazy in Alabama" by Rita Williams-Garcia

In their most recent assessment, for example, transit scored a D- and hazardous waste a D+.

From National Geographic ● Jul. 17, 2023

Rep. Kim Schrier, D- Sammamish, 8th Congressional District, which was stretched further into more conservative territory on the east slopes of the Cascade Mountains.

From Seattle Times ● Jun. 17, 2022

Louisiana’s drinking water infrastructure limps in with a D-.

From Washington Post ● Jun. 16, 2021

Ms. E.K. announced that she would be holding before-school tutoring sessions, which Sarah, who finished the fall semester with a D-, never would have attended during remote learning.

From New York Times ● May 13, 2021

At twelve o’clock Mrs. D- went down to sell cold chickens, &c., and I went with her, and sat under a tree in the bed of the little stream, now nearly dry. 

From Letters from the Cape by Lady Lucie Duff Gordon

I marched back to the maitre d’ at his podium and passionately argued for my personal père et fils special moment.

From The Wall Street Journal ● Sep. 18, 2026

In the A.I. age, Maggie Hennessy asserts, sparring with a grouchy maître d’ over the phone is part of what makes dining out great.

From Slate ● Jul. 24, 2026

Flanked by tuxedoed servers and the maître d’, she announced the founder’s death, mostly silencing the crowded dining room.

From Los Angeles Times ● Aug. 17, 2025

Girmay topped his Gent-Wevelgem victory with another history-making stage win at Giro d' Italia, which after the Tour de France is cycling's second biggest Grand Tour race.

From BBC ● Jul. 19, 2024

With a flourish, the maître d’ held back an armful of foliage so that Penelope could enter the leafy, secluded room.

From "The Hidden Gallery" by Maryrose Wood

Ke5, Muzychuk can’t hold back both the d- and g-pawns indefinitely and resigned.

From Washington Times ● Dec. 27, 2022

Both the d- and f-block elements react with nonmetals to form binary compounds; heating is often required.

From Textbooks ● Feb. 14, 2019

They're called d- and l-isomers—d for dextro, l for levo; right and left, you see.

From A Feast of Demons by Joseph Samachson

New Designs University Park, 16-25, 25-22, 25-21, 22-25, 15-13 Jordan d. 25-23, 25-19, 25-10 Westchester d.

From Los Angeles Times ● Oct. 31, 2024

But just as bell hooks, the feminist writer, and k. d. lang, the singer-songwriter, often see their names appear with unwanted capital letters, lowercase compositions are often capitalized on their way to publication.

From New York Times ● Mar. 17, 2017

Use your answers to parts a. and d. to determine which of the three options is best.

From Textbooks ● Mar. 30, 2016

From part d. we see that receiving $1 million dollars per year indefinitely is worth $20 million dollars in today’s dollars.

From Textbooks ● Mar. 30, 2016

Henrietta Maria and Lydia, both d. unm. ii.

From Antigua and the Antiguans, Volume II (of 2) A full account of the colony and its inhabitants from the time of the Caribs to the present day by Anonymous

The 80-plus years of U.S.-Saudi friendship, which began when Franklin D. Roosevelt met King Abdulaziz aboard a ship off Egypt in 1945, have been marked by repeated disagreements and disappointments.

From The Wall Street Journal ● Oct. 18, 2026

Franklin D. Roosevelt's Democrats gained nine House seats in 1934, while Bill Clinton's party picked up four in 1998 and George W. Bush's Republicans gained eight in 2002.

From Barron's ● Oct. 13, 2026

At its heart is the Audre D. Carlin Reading Room, where visitors can request items from the library and archive, including recordings of every production staged at the Globe since the mid-1990s.

From BBC ● Oct. 11, 2026

For example, Standard Oil founder John D. Rockefeller has long been considered the richest American in history.

From MarketWatch ● Oct. 9, 2026

Besides my father and Uncle D. “And I’m eleven.”

From "P.S. Be Eleven" by Rita Williams-Garcia

Corona Santiago, 26-24, 25-19, 18-25, 25-13 Redlands d.

From Los Angeles Times ● Oct. 22, 2026

Arlington, 20-25, 16-25, 25-23, 25-21, 16-14 Foothill Tech d.

From Los Angeles Times ● Oct. 22, 2026

Excelsior Charter, 25-17, 22-25, 25-8, 25-10 Milken Community d.

From Los Angeles Times ● Oct. 22, 2026

Bishop Montgomery, 21-25, 25-15, 25-23, 25-19 Orange Lutheran d.

From Los Angeles Times ● Oct. 21, 2026

I d had multiple conversations with teachers who had no idea I was only half hearing whatever they were saying to me, and for some reason this made me happy.

From "A Very Large Expanse of Sea" by Tahereh Mafi

The Direct Action Everywhere activists were recently on a public road near Double D’s main farm, flying a drone over the property.

From Los Angeles Times ● May 12, 2026

What drives customers to storage, Dietz says are the four D’s: downsizing, decluttering, divorce and death.

From The Wall Street Journal ● Apr. 15, 2026

Gass said that the Sydney show definitely won’t be Tenacious D’s last.

From Salon ● Jan. 21, 2026

I am a deep believer in this idea that national security is built off the three D’s: defense, diplomacy, and development.

From Slate ● Feb. 5, 2025

A small brass-colored trophy sits on Mr. D’s desk.

From "Out of My Mind" by Sharon M. Draper

Only eight banks got Bs, while the majority got Cs; 36 got Ds.

From MarketWatch ● Feb. 27, 2026

The words are thought to reference the "three Ds of insurance" - tactics used by companies to reject payment claims from customers.

From BBC ● Feb. 6, 2026

“Propositions are a part of the ballot where you don’t have Ds and Rs, you have yeses and nos,” Baldassare said.

From Los Angeles Times ● Nov. 7, 2024

The same four Ds applied: death, divorce, dislocation, and disaster/downsizing.

From Slate ● Aug. 5, 2024

He had been getting Cs and Ds, and college never felt like home, anyway.

From "Class Matters" by The New York Times

The researchers intend to continue examining Webb's observations to refine their estimates of Beta Pictoris d's temperature, atmospheric composition, and orbit.

From Science Daily ● Jul. 23, 2026

A small illustration of the eponymous rat hangs in the restaurant, signed by director Brad Bird, who spent days sketching the dining room, capturing the lamps, cheese trolley and maitre d's outfit.

From BBC ● Jan. 29, 2024

Dinner maitre d’s are gently professional, warm and welcoming.

From Washington Times ● Jul. 17, 2018

I know the NYT has other food writers covering the cheaper places while Pete Wells reviews the fancier places more likely to have a maître d's, sommeliers, and pastry chefs.

From New York Times ● Jan. 23, 2018

He pronounced the words lazily, blunting the t’s to d’s so that it sounded like “siddle lister.”

From "Educated" by Tara Westover

The Cyclones closed the third quarter with a pair of 3-pointers, the second by Ryan in the closing secon ds, that put ISU on top 49-47.

From Seattle Times ● Jan. 18, 2023

Senior forward Oscar ds Silva has played well all season and was named the Pac-12 player of the week after averaging 19.8 points and 11 rebounds in three games last week.

From Washington Times ● Jan. 13, 2021

If f is a continuous function on a smooth curve C, then ∫C f ds always exists.

From Textbooks ● Mar. 30, 2016

As a result, we would incorrectly conclude that ds = 0.

From Textbooks ● Mar. 30, 2016

Let Pp = ds, and the vertical distance of p below P = dx, then Pp = velocity at P × dt; that is, dt = ds/v.

From Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5 "Clervaux" to "Cockade" by Various

Random Word

Spin the wheel and learn a new word!

---