12-letter words containing r, o, s
- astrobiology — the branch of biology that investigates the possibility of life elsewhere in the universe
- astrochemist — (chemistry, astronomy) A chemist or astronomer whose speciality is astrochemistry.
- 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
- astrocytomas — Plural form of astrocytoma.
- astrodynamic — Pertaining to astrodynamics.
- astrogeology — the study of the structure, composition, and history of other planets and other bodies in the solar system
- astrological — the study that assumes and attempts to interpret the influence of the heavenly bodies on human affairs.
- astronautics — the science and technology of space flight
- astronomical — If you describe an amount, especially the cost of something as astronomical, you are emphasizing that it is very large indeed.
- astrophysics — Astrophysics is the study of the physical and chemical structure of the stars, planets, and other natural objects in space.
- astrotourist — a person who pays to travel into space as a form of recreation
- astroturfing — a PR tactic used in politics and advertising in which actors are paid to display overt and apparently spontaneous grassroots support for a particular product, policy, or event
- asynchronies — a lack of synchronism or coincidence in time.
- asynchronism — a lack of synchronism; occurrence at different times
- asynchronous — An asynchronous electric machine is one in which the magnetic field and the rotation are not exactly the same.
- at all hours — If you say that something happens at all hours of the day or night, you disapprove of it happening at the time that it does or as often as it does.
- at the worst — bad or ill in the highest, greatest, or most extreme degree: the worst person.
- atheromatous — a sebaceous cyst.
- atholl brose — a mixture of whisky and honey left to ferment before consumption
- athrocytosis — the capability of a cell to receive and store matter
- 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.
- atom smasher — accelerator (sense 3)
- atorvastatin — a statin, (C 33 H 34 FN 2 O 5) 2 ·Ca 3 H 2 O, used in the prevention and treatment of heart disease.
- attorneyship — The office or profession of an attorney.
- attributions — Plural form of attribution.
- auger shower — a shower of electrons, photons, etc. resulting from the collision of primary cosmic rays with atomic nuclei in the atmosphere
- australopith — (archaeology, anthropology, paleonotology) Of or pertaining to the extinct hominid primates, of the genus Australopithecus, from the Pleistocene period.
- austronesian — of or relating to Austronesia, its peoples, or their languages
- auto-erotism — the arousal and satisfaction of sexual excitement within or by oneself, as by masturbation.
- autochangers — Plural form of autochanger.
- autodestruct — likely to or possessing the power to destroy or obliterate itself or its possessor
- autodiallers — Plural form of autodialler.
- autoexposure — A device that sets the exposure automatically on a camera or other piece of equipment.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autorickshaw — (in India) a light three-wheeled vehicle driven by a motorcycle engine
- avariciously — characterized by avarice; greedy; covetous.
- b chromosome — a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
- bachelorship — the state of being a bachelor; bachelorhood
- backcrossing — (genetics) The crossing of a hybrid with one of its parents or an individual genetically similar to its parent.
- backswordman — a person who uses a backsword.
- bacon-slicer — a machine for cutting bacon into slices
- bacteriostat — any substance that arrests the growth or reproduction of bacteria but does not kill them
- bad scran to — bad luck to
- baker's oven — an oven used esp for baking bread
- banksia rose — a climbing rose, Rosa banksiae, native to China, having long, serrated leaves and white or yellow flowers.
- barbados nut — an ornamental, tropical American tree, Jatropha curcas, of the spurge family, having ivylike leaves, small, yellow or greenish-yellow flowers, and olive-shaped fruit yielding a purgative, poisonous oil.
- barbarossa i — (Aruj) died 1518, Barbary pirate, born in Greece.
- bardolatrous — relating to or characterized by bardolatry
- barge course — the overhang of the gable end of a roof