| 3-D |
of, concerning, or portraying something in, or as if in, three dimensions. [2 definitions] |
| A.D. |
abbreviation of "anno Domini" (Latin); in the year of the Lord, or, since the birth of Jesus Christ (used in designating dates). |
| c.o.d. |
abbreviation of "collect on delivery." [2 definitions] |
| D and C |
abbreviation of "dilatation and curettage," a surgical procedure in which the cervix is dilated and the uterine lining is scraped with a curette. |
| D layer |
the lowest layer of the ionosphere, about forty-five to eighty miles above the earth. |
| D-day |
the day, kept secret, on which a military attack or other important action is scheduled to take place. [2 definitions] |
| D.A. |
abbreviation of "District Attorney," the government prosecutor of criminal cases for a specified judicial district. |
| D.C.1 |
abbreviation of "da capo," from the beginning (used in music as a direction to repeat a passage). |
| D.C.2 |
abbreviation of "District of Columbia," a federal area on the Maryland side of the Potomac River that encompasses only the U.S. capital city of Washington (often used informally to refer to the city.) |
| D.D. |
abbreviation of "Doctor of Divinity." |
| D.D.S. |
abbreviation of "Doctor of Dental Surgery." |
| D.O.A. |
abbreviation of "dead on arrival." |
| D.S. |
abbreviation of "dal segno," from the sign (used in music as a direction to return to the point so marked and repeat a passage). |
| d.t.'s |
abbreviation of "delirium tremens," a condition caused by chronic excessive drinking of alcohol and characterized by hallucinations, trembling, and anxiety. |
| D.V.M. |
abbreviation of "Doctor of Veterinary Medicine." |
| Ed.D. |
abbreviation of "Doctor of Education." |
| J.D. |
abbreviation of "juris doctor" (Latin); Doctor of Law, or Doctor of Jurisprudence. |
| Litt. D. |
abbreviation of "litterarum doctor" (Latin); Doctor of Letters, or Doctor of Literature. |
| LL.D. |
abbreviation of "legum doctor" (Latin); Doctor of Laws. |
| M.D. |
abbreviation of "medicinae doctor" (Latin); Doctor of Medicine. |