Main definitions of d in English

: d1D2D3


Pronunciation /diː/

Translate d into Spanish


  • 1Date.

  • 2(in genealogies) daughter.

  • 3Day(s)

    • ‘orbital period (Mars): 687.0d’
  • 4Deceased.

  • 5Deep.

  • 6in combination (in units of measurement) deci-.

  • 7(in travel timetables) departs.

  • 8d.Died (used to indicate a date of death)

    • ‘Barents, Willem (d.1597)’
  • 9Divorced.

  • 10British Penny or pence (of predecimal currency)

    • ‘£20 10s 6d’
  • 11Chemistry
    Denoting electrons and orbitals possessing two units of angular momentum.

    • ‘d-electrons’

  • 1Diameter.

    • ‘the circumference of a circle is expressed by the formula πd’
  • 2Denoting a small increment in a given variable.

    • ‘dy/dx’

Main definitions of D in English

: d1D2D3


(also d)

Pronunciation /dē/ /di/

Translate D into Spanish

nounDs, D's

  • 1The fourth letter of the alphabet.

    • ‘Each half resembles a uppercase letter D, so the two parts of the cyclotron are known as dees.’
    1. 1.1Denoting the fourth in a set of items, categories, sizes, etc.
    2. 1.2The fourth highest category of academic mark.
    3. 1.3dChess Denoting the fourth file from the left, as viewed from White's side of the board.
    4. 1.4Denoting the second-lowest-earning socioeconomic category for marketing purposes, including semiskilled and unskilled personnel.
  • 2

    (also D)
    A shape like that of a capital D.

    • ‘the D-shaped handle’
    1. 2.1A loop or ring shaped like that of a capital D.
      • ‘a saddle with stainless steel dees’
    2. 2.2(in some team sports) the marked semicircular area in front of or surrounding the goal at each end of the field or court.
      • ‘she completed the scoring in the final five minutes, running into the D and shooting into the bottom right corner’
  • 3usually DMusic
    The second note of the diatonic scale of C major.

    1. 3.1A key based on a scale with D as its keynote.
  • 4The Roman numeral for 500.

Main definitions of D in English

: d1D2D3


Pronunciation /dē/ /di/

Translate D into Spanish


  • 1Democrat or Democratic.

    • ‘Delaware: breakdown of outgoing Senate: 13 D, 8 R’
  • 2Depth (in the sense of the dimension of an object from front to back)

    • ‘H 35 cm × W 50 cm × D 20 cm’
  • 3Chemistry

    • ‘D-glucose’
  • 4(with a numeral) dimension(s) or dimensional.

    • ‘a 3-D model’
  • 5(in tables of sports results) drawn.

  • 6(on an automatic gearshift) drive.

  • 7(in personal ads) divorced.

  • 1Physics
    Electric flux density.

  • 2Chemistry
    The hydrogen isotope deuterium.



/dē/ /di/