12-letter words containing o, r, g, a
- backcrossing — (genetics) The crossing of a hybrid with one of its parents or an individual genetically similar to its parent.
- backgrounded — Simple past tense and past participle of background.
- backgrounder — A backgrounder is a short article in a newspaper or magazine that provides background information about a particular subject.
- bacteriology — Bacteriology is the science and the study of bacteria.
- bagworm moth — any moth of the family Psychidae
- balladmonger — (formerly) a seller of ballads, esp on broadsheets
- barcalounger — a type of reclinable armchair with an extendable footrest
- barge couple — either of a pair of outside rafters along the gable end of a roof
- barge course — the overhang of the gable end of a roof
- barking frog — a robber frog, Hylactophryne augusti, of Texas, New Mexico, and Mexico, having a call like a dog's bark.
- barnstorming — A barnstorming performance is full of energy and very exciting to watch.
- barrel organ — A barrel organ is a large machine that plays music when you turn the handle on the side. Barrel organs used to be played in the street to entertain people.
- baton charge — A baton charge is an attacking forward movement made by a large group of policemen carrying batons.
- battle group — a group of warships usually consisting of at least one aircraft carrier, other surface ships, submarines, landing craft, etc
- battleground — A battleground is the same as a battlefield.
- beardtongues — Plural form of beardtongue.
- bearing down — to hold up; support: to bear the weight of the roof.
- benzal group — the bivalent group C 7 H 6 –, derived from benzaldehyde.
- bibliography — A bibliography is a list of books on a particular subject.
- bingo caller — the person who shouts out the numbers to bingo players
- bio-organism — a dangerous fast-proliferating organism that could be used as the basis of a biological weapon
- biogeography — the branch of biology concerned with the geographical distribution of plants and animals
- biographical — Biographical facts, notes, or details are concerned with the events in someone's life.
- bioinorganic — pertaining to the biological activity of metal complexes and nonmetal compounds based on elements other than carbon (contrasted with bioorganic).
- black grouse — a large N European grouse, Lyrurus tetrix, the male of which has a bluish-black plumage and lyre-shaped tail
- blaze orange — a very bright orange, as on a traffic cone.
- blood orange — a variety of orange all or part of the pulp of which is dark red when ripe
- boar-hunting — the practice of hunting wild boars
- boarding out — the local-authority practice of placing a client in a foster family or voluntary establishment and paying for it
- boardsailing — windsurfing
- boating trip — a trip or holiday in a boat such as a sailing boat or canal boat
- bodyboarding — the sport of surfing using a bodyboard
- bog rosemary — any of several species (genus Andromeda) of evergreen shrubs of the heath family, native to cold bogs of North America and Europe, with pink flowers and narrow leaves
- bog-standard — If you describe something as bog-standard you mean that is an ordinary example of its kind, with no exciting or interesting features.
- boilermaking — metal-working in heavy industry; plating or welding
- boogie board — a small, flexible plastic surfboard, ridden lying down.
- boolean ring — a nonempty collection of sets having the properties that the union of two sets of the collection is a set in the collection and that the relative complement of each set with respect to any other set is in the collection.
- boomeranging — a bent or curved piece of tough wood used by the Australian Aborigines as a throwing club, one form of which can be thrown so as to return to the thrower.
- border guard — a guard stationed on a border between countries
- born-digital — relating to or noting documents, images, etc., that are created and managed in electronic form: electronic preservation of born-digital content; a born-digital e-book that will not be available in print.
- borough hall — a building housing the administrative offices of a borough.
- bottom grass — any grass that grows on bottoms or lowlands.
- boulangerite — a bluish lead-gray mineral, lead antimony sulfide, Pb 5 Sb 4 S 11 , a minor ore of lead.
- bound charge — any electric charge that is bound to an atom or molecule (opposed to free charge).
- boxgrove man — a type of primitive man, probably Homo heidelbergensis, and probably dating from the Middle Palaeolithic period some 500 000 years ago; remains were found at Boxgrove in West Sussex in 1993 and 1995
- braggadocios — empty boasting; bragging.
- break ground — to do something that has not been done before
- breakthrough — A breakthrough is an important development or achievement.
- breastplough — a plough driven by the worker's breast, often used to pare turf
- breath group — a sequence of sounds articulated in the course of a single exhalation; an utterance or part of an utterance produced between pauses for breath.