dPronunciation: /diː/Translate d | into French | into German | into Italian | into Spanish Definition of d abbreviation (in genealogies) daughter: Henry m. Georgina 1957, 1s 2d day(s): orbital period (Mars): 687.0 d [in combination] (in units of measurement) deci-. (in travel timetables) departs: Plymouth d 0721 (d.) died (used to indicate a date of death):Barents, Willem (d.1597) British penny or pence (of pre-decimal currency):£20 10s 6d[from Latin denarius 'penny'] Chemistry denoting electrons and orbitals possessing two units of angular momentum:d-electrons[d from diffuse, originally applied to lines in atomic spectra] symbol Mathematics diameter: the circumference of a circle is expressed by the formula πd Mathematics denoting a small increment in a given variable:dy/dxd in other Oxford dictionaries Definition of d in the US English dictionary
