Definition of "VD"

VD

noun
countable and uncountable, plural VDs
1. (aviation) The design diving speed of an aircraft; the highest speed which the aircraft is planned to reach during flight testing. Always higher than VNE (the speed that must not be exceeded in service).
2. (pathology, dated) Initialism of venereal disease.
  Quotations
  One of the things I've learned traveling around America is how many people have relied on the Joy of Gay Sex as their primary source of information, about not only sexual positions and activities, but about things like V.D., sexual dysfunction, coming out with the family, and dealing with feelings of guilt related to religion.
  1979 April 21, Tommi Avicolli, Edmund White, “Talking With Edmund White”, in Gay Community News, page 10