1(in genealogies) daughter.
- ‘Henry m. Georgina 1957, 1s 2d’
- ‘orbital period (Mars): 687.0 d’
3in combination (in units of measurement) deci-.
4(in travel timetables) departs.
- ‘Plymouth d 0721’
5d.Died (used to indicate a date of death)
- ‘Barents, Willem (d.1597)’
6British Penny or pence (of pre-decimal currency)
- ‘£20 10s 6d’
From Latin denarius ‘penny’.
Denoting electrons and orbitals possessing two units of angular momentum.
Dfrom diffuse, originally applied to lines in atomic spectra.
- ‘the circumference of a circle is expressed by the formula πd’
2Denoting a small increment in a given variable.
nounplural noun Ds, plural noun 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.’
- 1.1Denoting the fourth in a set of items, categories, sizes, etc.
- 1.2The fourth-highest category of academic mark.
- 1.3dChess Denoting the fourth file from the left, as viewed from White's side of the board.
- 1.4Denoting the second-lowest-earning socio-economic category for marketing purposes, including semi-skilled and unskilled personnel.
2(also D)A shape like that of a capital D.
- ‘the D-shaped handle’
- 2.1A loop or ring in the shape of a capital D.
- ‘a saddle with stainless steel dees’
- 2.2(in some team sports) the marked semicircular area in front of or surrounding the goal at each end of the pitch or court.
- ‘she completed the scoring in the final five minutes, running into the D and shooting into the bottom right corner’
- 2.3DA semicircle marked on a billiard table in the baulk area, with its diameter part of the baulk line, within which a player must place the cue ball when breaking off or restarting from hand.
The second note of the diatonic scale of C major.
- 3.1A key based on a scale with D as its keynote.
4The Roman numeral for 500.
Understood as half of CIƆ, an earlier form of M (= 1,000).
1(in the US) Democrat 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’
4(with a numeral) dimension(s) or dimensional.
- ‘a 3-D model’
5(in tables of sports results) drawn.
6(on an automatic gear shift) drive.
7Germany (international vehicle registration).
From German Deutschland.
Electric flux density.
The hydrogen isotope deuterium.