(Judaism) A deliberately incomplete spelling of God.

(business) Initialism of Research and Development (a department within a company (or governmental division) dedicated to that task, or the fiscal category that represents it in fiscal reporting.)

(historical) 6 June 1944, the date when the Allies invaded western Europe in World War II.

(figuratively) The date of any major event planned for the future.

Abbreviation of dilation and curettage.

(role-playing games) Initialism of Advanced Dungeons & Dragons.

Initialism of accidental death and dismemberment.

Initialism of application development and delivery.

(euphemistic, chiefly US And UK) The word damn. / (euphemistic) The word dick or dickhead. / (euphemistic) The word douche or douchebag. / (euphemistic) The word dyke.

(biochemistry) Any of a number of fat-soluble vitamins, required for normal bone development and that prevents rickets; can be manufactured in the skin on exposure to sunlight.