12-letter words containing r, d, o, p
- 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
- doorstepping — talking to someone at the door of their home, for political canvassing or to gather information
- dopaminergic — activated by or sensitive to dopamine.
- dope peddler — a seller of illegal drugs
- doppelganger — a ghostly double or counterpart of a living person.
- doppleganger — Misspelling of doppelganger.
- dosing strip — (in New Zealand) an area set aside for treating dogs suspected of having hydatid disease
- double sharp — a symbol (× or ) that raises by two semitones the pitch of the following note.
- dow compiler — An early system on the Datatron 200 series.
- 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.).
- draughtproof — That prevents the access of draughts.
- drop a brick — a block of clay hardened by drying in the sun or burning in a kiln, and used for building, paving, etc.: traditionally, in the U.S., a rectangle 2.25 × 3.75 × 8 inches (5.7 × 9.5 × 20.3 cm), red, brown, or yellow in color.
- drop biscuit — a biscuit made by dropping baking powder biscuit dough from a spoon onto a pan for baking.
- drop curtain — a curtain that is lowered into position from the flies.
- drop forging — a product made by drop-forging
- drop initial — inset initial.
- drop shipper — a wholesaler or distributor who conducts business in drop shipments.
- dropout rate — the percentage of students failing to complete a particular school or college course
- dropped seat — a seat of a chair or the like, having a front dished so as to be lower than the sides or back.
- dropped sole — a condition in which the foot of a horse is convex instead of concave
- dryopithecus — an extinct genus of generalized hominoids that lived in Europe and Africa during the Miocene Epoch and whose members are characterized by small molars and incisors.
- dual-purpose — serving two functions.
- eavesdropped — Simple past tense and past participle of eavesdrop.
- eavesdropper — to listen secretly to a private conversation.
- edaphosaurus — Any of several dinosaurs of the family Edaphosauridae, from the Carboniferous and Permian periods, that had a distinctive dorsal sail or crest.
- eden project — an environmental complex containing the world's largest greenhouse, built in a disused clay pit near St Austell, Cornwall, to study plant populations in a variety of environments
- eggdrop soup — a soup made by stirring beaten eggs into a simmering broth.
- electrotyped — Simple past tense and past participle of electrotype.
- endomorphism — changes in a cooling body of igneous rock brought about by assimilation of fragments of, or chemical reaction with, the surrounding country rock
- endoparasite — A parasite, such as a tapeworm, that lives inside its host.
- endoperoxide — one of the substances formed in the biosynthesis of prostaglandins
- expectorated — Simple past tense and past participle of expectorate.
- export drive — a united effort to increase a country's exports
- export trade — the area of business or industry concerned with the export of goods or services
- expropriated — Simple past tense and past participle of expropriate.
- extemporised — Simple past tense and past participle of extemporise.
- extemporized — Simple past tense and past participle of extemporize.
- extrapolated — Simple past tense and past participle of extrapolate.
- farm produce — agricultural products regarded collectively
- fernando póo — Bioko
- field sports — sports carried on in the open countryside, such as hunting, shooting, or fishing
- flameproofed — Simple past tense and past participle of flameproof.
- flash powder — powder that could be ignited to provide a bright light to take a photograph
- floppy drive — disk drive
- fluoroscoped — Simple past tense and past participle of fluoroscope.
- food pyramid — successive levels of predation in a food chain represented schematically as a pyramid because upper levels normally consist of decreasing numbers of larger predators.