■ abbreviation
1》 (in genealogies) daughter.
2》 day(s).
3》 deci-.
4》 (in travel timetables) departs.
5》 ( d. ) died (used to indicate a date of death).
6》 Brit. penny or pence (of pre-decimal currency). [from L. denarius 'penny'.]
7》 Chemistry denoting electrons and orbitals possessing two units of angular momentum. [ d from diffuse , orig. applied to lines in atomic spectra.]
■ symbol
1》 Mathematics diameter.
2》 Mathematics denoting a small increment in a given variable.