12-letter words containing p, r
- arseno group — the bivalent group −As=As−.
- arsenopyrite — a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsS
- arsino group — the univalent group H 2 As−.
- arsphenamine — a drug containing arsenic, formerly used in the treatment of syphilis and related infections
- arteriopathy — Any disease of the arteries.
- arthrography — the X-ray examination of a joint after injection of a contrast medium into the joint space
- arthropathic — disease of the joints.
- arthroplasty — surgical repair of a diseased joint
- arthroscopes — Plural form of arthroscope.
- arthroscopic — the use of an arthroscope to diagnose an injury to or disease of a joint or to perform minor surgery on a joint.
- arthrospores — an isolated vegetative cell that has passed into a resting state, occurring in bacteria and not regarded as a true spore.
- as per usual — as usual
- ashurbanipal — died ?626 bc, king of Assyria (?668–?626): son of Esarhaddon. He built the magnificent palace and library at Nineveh
- asking price — The asking price of something is the price which the person selling it says that they want for it, although they may accept less.
- asparaginase — an enzyme used in treating leukaemia
- aspect ratio — the ratio of width to height of the picture on a television or cinema screen
- asphalt rock — a rock formation, usually of limestone or sandstone, containing large amounts of bitumens.
- aspirational — If you describe someone as aspirational, you mean that they have strong hopes of moving to a higher social status.
- aspiringness — the condition of being aspiring
- assessorship — the occupation, post or duties of a person who assesses, advises, or estimates
- assurbanipal — Ashurbanipal
- astral plane — a plane of existence inhabited by astral bodies
- astrocompass — a navigational instrument for giving directional bearings from the centre of the earth to a particular star. It is carried in long-range aircraft, ships, spacecraft, etc
- astrophysics — Astrophysics is the study of the physical and chemical structure of the stars, planets, and other natural objects in space.
- at a premium — If something is at a premium, it is wanted or needed, but is difficult to get or achieve.
- at any price — If you want something at any price, you are determined to get it, even if unpleasant things happen as a result.
- at the press — being printed
- athwartships — from one side to the other of a vessel at right angles to the keel
- atmospherics — Atmospherics are elements in something such as a piece of music or a book which create a certain atmosphere.
- atmospherium — an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome.
- atomic power — nuclear power.
- attorneyship — The office or profession of an attorney.
- australopith — (archaeology, anthropology, paleonotology) Of or pertaining to the extinct hominid primates, of the genus Australopithecus, from the Pleistocene period.
- autapomorphy — (cladistics) A derived trait that is unique to a particular taxon.
- autoexposure — A device that sets the exposure automatically on a camera or other piece of equipment.
- autographing — Present participle of autograph.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- azathioprine — a synthetic drug that suppresses the normal immune responses of the body and is administered orally during and after organ transplantation and also in certain types of autoimmune disease. Formula: C9H7N7O2S
- b-s particle — a neutral meson with a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 X 10 -12 seconds.
- bach trumpet — a modern small three-valved trumpet for playing clarino passages in Bach's music
- bachelor pad — a flat in which a bachelor lives
- bachelorship — the state of being a bachelor; bachelorhood
- back-slapper — the practice of making a loud and effusive display of friendliness, cordiality, etc., as by slapping persons on the back.
- backpressure — a resistant pressure exerted by liquid or gas against the forward motion or flow of an exhaust or pipe system: Careful control of backpressure ensures an even supply of oil from the well.
- bad-tempered — Someone who is bad-tempered is not very cheerful and gets angry easily.
- badger plane — a plane for finishing rabbets or the like.
- bald cypress — a tree, Taxodium distichum, of swampy areas of the southern U.S., having featherlike needles and cone-shaped projections growing up from the roots, yielding a hardwood used in construction, shipbuilding, etc.
- baldwin park — city in SW Calif.: suburb of Los Angeles: pop. 76,000
- ballad opera — an opera consisting of popular tunes to which appropriate words have been set, interspersed with spoken dialogue
- ballot paper — A ballot paper is a piece of paper on which you indicate your choice or opinion in an election or ballot.