12-letter words containing e, r, o, s, i
- bedfordshire — a county of S central England, administered since 2009 by the unitary authorities of Bedford and Central Bedfordshire: mainly low-lying, with the Chiltern Hills in the south: the geographical county includes Luton, which became a separate unitary authority in 1997. Area (excluding Luton): 1192 sq km (460 sq miles)
- behaviourism — Behaviourism is the belief held by some psychologists that the only valid method of studying the psychology of people or animals is to observe how they behave.
- below stairs — People sometimes use below stairs to refer to the servants in a rich household and the things that are connected with them.
- beta orionis — Rigel
- beta version — beta testing
- bib overalls — overall (def 3a).
- bichon frise — a small white poodle-like dog of European origin, with a silky, loosely curling coat
- bio-security — the precautions taken to protect against the spread of lethal or harmful organisms and diseases
- biochemistry — Biochemistry is the study of the chemical processes that happen in living things.
- biodiversity — Biodiversity is the existence of a wide variety of plant and animal species living in their natural environment.
- bioterrorism — Bioterrorism is terrorism that involves the use of biological weapons.
- bird-spotter — a bird-watcher
- bitter aloes — a bitter purgative drug made from the leaves of several species of aloe
- blood sister — a sister by birth
- body repairs — repairs to the bodywork of cars
- bognor regis — a resort in S England, in West Sussex on the English Channel: electronics industries. Regis was added to the name after King George V's convalescence there in 1929. Pop: 62 141 (2001)
- boiled shirt — a dress shirt with a stiff front
- boiler house — a building housing a boiler
- bois de rose — a grayish red or dark purplish red color.
- boisterously — rough and noisy; noisily jolly or rowdy; clamorous; unrestrained: the sound of boisterous laughter.
- booze cruise — a day trip to a foreign country, esp from England across the English Channel to France, for the purposes of buying cheap alcohol, cigarettes, etc
- borosilicate — a salt of boric and silicic acids
- bosom friend — an intimate friend
- bossier city — city in NW La., on the Red River opposite Shreveport: pop. 56,000
- bourgeoisify — to convert to a bourgeois attitude or appearance
- brainstormer — a person who brainstorms
- bridge house — a deckhouse including a bridge or bridges for navigation.
- brisbane box — a broad-leaved evergreen tree, Tristania conferta, native to Australia, having a deciduous outer bark.
- brise-soleil — a structure used in hot climates to protect a window from the sun, usually consisting of horizontal or vertical strips of wood, concrete, etc
- bristlemouth — any of several small, deep-sea fishes of the family Gonostomatidae, having numerous sharp, slender teeth covering the jaws.
- browser skin — a changeable decorative background for a browser
- buenos aires — the capital of Argentina, a major port and industrial city on the Río de la Plata estuary: became capital in 1880; university (1821). Pop: 13 349 000 (2005 est)
- byelorussian — Byelorussian means belonging or relating to Byelorussia or to its people or culture.
- calorimeters — Plural form of calorimeter.
- canine corps — a military or law enforcement body which uses dogs for the detection of explosives or drugs or for security, tracking, etc
- carbonatites — Plural form of carbonatite.
- case history — A person's case history is the record of past events or problems that have affected them, especially their medical history.
- cataphoresis — electrophoresis
- categorising — to arrange in categories or classes; classify.
- cater-cousin — a close friend
- cauliflowers — Plural form of cauliflower.
- cecil rhodes — Cecil John, 1853–1902, English colonial capitalist and government administrator in southern Africa.
- ceiling rose — decorative plaster centrepiece
- celebrations — Plural form of celebration.
- celtic cross — a Latin cross with a broad ring surrounding the point of intersection
- censoriously — In a censorious manner.
- centimorgans — Plural form of centimorgan.
- ceratopsians — Plural form of ceratopsian.
- cerebrations — Plural form of cerebration.
- cerebrosides — Plural form of cerebroside.