12-letter words containing o, d, u, r
- doubleheader — Sports. two games, as of baseball, between the same teams on the same day in immediate succession. two games, as of basketball, between two different pairs of teams on the same day in immediate succession.
- douglas hurd — a third-class university degree
- downregulate — To decrease the number of cell receptors by using downregulation.
- draughtboard — checkerboard (def 1).
- draughtproof — That prevents the access of draughts.
- dreadnoughts — Plural form of dreadnought.
- dromaeosaurs — Plural form of dromaeosaur.
- 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.
- dropout rate — the percentage of students failing to complete a particular school or college course
- droseraceous — of or relating to the genus of plants Drosera
- droughtiness — Dryness of the weather; lack of rain.
- drug holiday — a brief period during which a patient stops taking a prescribed medication, especially an antidepressant, to recover some normal functions, reduce side effects, or maintain sensitivity to the drug.
- dry mounting — the technique of fastening a print, photograph, or the like to a board by using a heated thermoplastic tissue as an adhesive.
- dry tortugas — a group of eight coral islands at the entrance to the Gulf of Mexico: part of Florida
- 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-control — having dual controls
- dual-purpose — serving two functions.
- ductile iron — any of various cast irons strengthened by having the graphite content in the form of nodules rather than flakes, and containing cerium or magnesium as well as other additives.
- dumortierite — a mineral, aluminum borosilicate.
- dusky grouse — blue grouse.
- dust counter — any instrument used to measure the size and number of dust particles per unit volume in the atmosphere.
- dusty clover — a bush clover, Lespedeza capitata.
- dutch borneo — the former name of the southern and larger part of the island of Borneo: now part of Indonesia.
- dutch clover — white clover.
- dutch harbor — a U.S. naval base on Unalaska Island, in the Aleutian Islands.
- duty of care — the legal obligation to safeguard others from harm while they are in your care, using your services, or exposed to your activities
- duty officer — In the police or armed forces, a duty officer is an officer who is on duty at a particular time.
- echo sounder — a sonar instrument that uses echolocation to measure depths under water.
- edaphosaurus — Any of several dinosaurs of the family Edaphosauridae, from the Carboniferous and Permian periods, that had a distinctive dorsal sail or crest.
- edulcorating — Present participle of edulcorate.
- edulcoration — (rare) A sweetening.
- edulcorative — edulcorant
- eggdrop soup — a soup made by stirring beaten eggs into a simmering broth.
- electrocuted — Simple past tense and past participle of electrocute.
- endeavouring — Present participle of endeavour.
- endovascular — Within a blood vessel.
- fardel-bound — (of ruminants) having the food impacted in the third compartment of the stomach; costive; constipated.
- farm produce — agricultural products regarded collectively
- favouredness — the quality of or extent to which something is favoured
- ferrofluidic — Of or pertaining to a ferrofluid.
- flindermouse — (obsolete) A bat (the mammal).
- float around — A rumour or idea that is floating around is often heard or talked about.
- fluoridating — Present participle of fluoridate.
- fluoridation — the addition of fluorides to the public water supply to reduce the incidence of tooth decay.
- fluoroscoped — Simple past tense and past participle of fluoroscope.
- flutterboard — a kickboard.
- folding rule — a rule composed of light strips of wood joined by rivets so as to be foldable, all the opening and closing parts being in parallel planes.
- food counter — a counter in a shop, bar, cafeteria, etc where food is sold or served
- forebuilding — (architecture,historical) An outer defense work of a castle used to protect the entrance to the keep.