12-letter words containing a, d, o, p
- diaphanously — In a diaphanous manner or to a diaphanous extent.
- diastrophism — the process of movement and deformation of the earth's crust that gives rise to large-scale features such as continents, ocean basins, and mountains
- dictatorship — Dictatorship is government by a dictator.
- dictyopteran — any insect of the order Dictyoptera, which comprises the cockroaches and mantises
- diencephalon — the posterior section of the forebrain.
- dilapidation — to cause or allow (a building, automobile, etc.) to fall into a state of disrepair, as by misuse or neglect (often used passively): The house had been dilapidated by neglect.
- dinosaur pen — A traditional mainframe computer room complete with raised flooring, special power, its own ultra-heavy-duty air conditioning, and a side order of Halon fire extinguishers. See boa.
- diphosphates — a pyrophosphate.
- diploblastic — having two germ layers, the ectoderm and endoderm, as the embryos of sponges and coelenterates.
- diplocardiac — having the right and left sides of the heart somewhat or completely divided, as in birds and mammals.
- diploma mill — an academic institution with low standards that awards many degrees
- diplomatical — Obsolete form of diplomatic.
- diplomatists — Plural form of diplomatist.
- diprionidian — (of a graptolite) with a row of cellules or serrations on both sides
- dipropellant — bipropellant.
- dipsacaceous — belonging to the Dipsacaceae, the teasel family of plants.
- dipsomaniacs — Plural form of dipsomaniac.
- dipyridamole — a yellow crystalline powder, C 24 H 40 N 8 O 4 , used prophylactically for angina pectoris and in combination with other drugs to reduce thrombus formation.
- disappointed — depressed or discouraged by the failure of one's hopes or expectations: a disappointed suitor.
- disapproving — Expressing an unfavorable opinion.
- disceptation — (archaic) Controversy; disputation; discussion.
- discographer — a person who compiles discographies.
- discographic — of or relating to a discography
- discorporate — Having no material body.
- disoperation — a relationship between two organisms in a community that is harmful to both
- disopyramide — a substance, C 21 H 29 N 3 O, used in its phosphate form in the symptomatic and prophylactic treatment of certain cardiac arrhythmias.
- dispatch box — a case or box used to hold valuables or documents, esp official state documents
- dispensation — an act or instance of dispensing; distribution.
- dispensatory — a book in which the composition, preparation, and uses of medicinal substances are described; a nonofficial pharmacopoeia.
- dispropriate — to deprive of ownership
- disputations — Plural form of disputation.
- disputatious — fond of or given to disputation; argumentative; contentious: disputatious litigants.
- dissapointed — Misspelling of disappointed.
- dissipations — Plural form of dissipation.
- do your part — contribute
- dockwalloper — longshoreman
- dodecaphonic — musical composition using the 12-tone technique.
- doggy paddle — a swimming stroke in which the swimmer lies on his or her front, paddles his or her hands in imitation of a swimming dog, and beats his or her legs up and down
- dolphinarium — An aquarium in which dolphins are kept and trained for public entertainment.
- domino paper — a marbleized or figured decorative paper, used for wallpaper, end papers, etc., printed from wood blocks and colored by hand.
- door scraper — a small horizontal bar fixed to the ground near a door where visitors can scrape mud from their shoes before entering
- dopaminergic — activated by or sensitive to dopamine.
- doppelganger — a ghostly double or counterpart of a living person.
- doppleganger — Misspelling of doppelganger.
- double sharp — a symbol (× or ) that raises by two semitones the pitch of the following note.
- double-space — to type (text, copy, etc.) leaving a full space between lines: Always double-space a term paper.
- down payment — an initial amount paid at the time of purchase, in installment buying, time sales, etc.
- draftsperson — a person employed in making mechanical drawings, especially in an architectural or engineering firm.
- drapery shop — a shop selling fabrics and sewing materials
- drapetomania — (dated) an overwhelming urge to run away (from home, a bad situation, responsibility, etc.).