Definition of "PD"

PD

noun
countable and uncountable, plural PDs
1. (law enforcement) Initialism of police department.
2. (electronics) Initialism of phase detector.
3. Initialism of public domain.
  Quotations
  It is forbidden to market the software although PD libraries are entitled to charge for such supporting costs as administration, distribution etc.
  1988, The Linguist: Journal of the Institute of Linguists, page 105
4. Initialism of peritoneal dialysis.
5. Initialism of penile duplication.
6. (U.S. military) Abbreviation of period (full stop) punctuation mark, used in communication systems without punctuation (e.g., telegrams).
  Quotations
  ... WILFORD J. WILLY CMA SR GRADE LIEUTENANT AND JOSEPH P. KENNEDY SR GRADE LIEUTENANT CMA BOTH USNR CMA WERE KILLED PD COMMANDER SMITH ...
  1944, telegram to Gen. Carl Andrew Spaatz from Gen. Jimmy Doolittle; Edward Renehan, The Kennedys at War, 1937-1945 (2002), Doubleday, page 304
7. Initialism of professional development.
8. (law) Initialism of public defender.
9. (pathology) Initialism of Parkinson’s disease.
10. (pathology) Initialism of panic disorder.
11. (pathology) Initialism of personality disorder.
  Quotations
  Board and Fritzon found that three of 11 personality disorders (PDs) were actually commoner in managers than in disturbed criminals. The first was histrionic PD, entailing superficial charm, insincerity, egocentricity and manipulativeness.
  2005 April 18, Oliver James, “Is your boss a psychopath?”, in The Guardian‎
12. (ophthalmology) Initialism of pupillary distance.
13. Initialism of process deviation.
14. (electronics) Initialism of power delivery.
15. (electricity) Initialism of partial discharge.
16. Initialism of pole dance.
17. (sports) Initialism of performance director.
  Quotations
  […] Simon Jones, the former British Cycling endurance coach who is now Sky head of performance support and innovation, is to take over as performance director of Australian Cycling from April. […] “It’s been my ambition for some time to be a PD of a cycling programme and there aren’t many of them. I’ve been in Australia before so it was a natural decision.”
  2017 February 23, William Fotheringham, “Simon Jones to leave Team Sky for top Australian Cycling role”, in The Guardian‎
18. (Ireland, politics, historical) Initialism of Progressive Democrat.
  Quotations
  The Progressive Democrats (PDs) are the junior partner in the governing coalition led by Bertie Ahern and his Fianna Fail party. […] Mr McDowell, a formidable barrister with a reputation as a political hothead, was elected leader of the PDs unopposed […] .
  2006 September 11, Owen Bowcott, “Outspoken justice minister to be Ireland's deputy leader”, in The Guardian‎
19. Initialism of positive deviance.
  Quotations
  The Sternins take an unorthodox approach to problem-solving known as positive deviance, or P.D., which builds on years of their health work in poor countries in Southeast Asia. / A P.D. program aims to identify individuals within small communities who have devised clever coping strategies to avoid problems afflicting their neighbors.
  2008 December 12, Jon Gertner, “8th Annual Year in Ideas: Positive Deviance”, in The New York Times Magazine‎
proper noun
1. (Ireland) Initialism of Progressive Democrats, a former political party disbanded in 2008.
2. (Malaysia) Initialism of Port Dickson, a town and district.
  Quotations
  This qualitative approach was used in re-vitalising Port Dickson (PD) as a leading beach tourism destination for Malaysia. PD was a top beach resort tourism destination in her glory days of 1990s.
  2016, Salleh Mohd Radzi, Mohd Hafiz Mohd Hanafiah, Norzuwana Sumarjan, Heritage, Culture and Society
  ""Isa has widespread grassroot support in his native Negeri Sembilan, among all the candidates, he is a local PD boy. The others all came out of nowhere,"
  2018 October 1, Eileen Ng, quoting Oh Ei Sun, “Who can dent Anwar Ibrahim’s armour in the Port Dickson by-election?”, in Today‎
  Ms Lau said she hoped "PD will be transformed as promised in so many ways", using the common moniker for the seaside town. "It is good […] to develop PD. That is what everyone in PD wants,"
  2018 October 13, Hazlin Hassan, “Anwar Ibrahim storms to victory in Port Dickson by-election, wins 72% of vote”, in The Straits Times‎
phrase
1. (cartography) Initialism of position doubtful.