12-letter words containing a, c, t, s, o
- 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.
- asymptomatic — If someone with a disease is asymptomatic, it means that they do not show any symptoms of the disease.
- asymptotical — of or relating to an asymptote.
- at all costs — If you say that something must be avoided at all costs, you are emphasizing that it must not be allowed to happen under any circumstances.
- atactostelic — Of or possessing an atactostele.
- 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.
- auction sale — an instance of items being sold by auction
- auction site — a commercial website on which items are sold by internet auction
- auscultation — the diagnostic technique in medicine of listening to the various internal sounds made by the body, usually with the aid of a stethoscope
- autocatalyse — to cause an internal, self-produced, chemical reaction
- autochangers — Plural form of autochanger.
- autochthones — Alternative spelling of autochthons.
- autodestruct — likely to or possessing the power to destroy or obliterate itself or its possessor
- autoeciously — in an autoecious manner
- autorickshaw — (in India) a light three-wheeled vehicle driven by a motorcycle engine
- autotheistic — Self-worshiping; prideful in the extreme.
- babcock test — a test for determining the butterfat content of milk and milk products, conducted by adding sulfuric acid to a sample and then centrifuging it in a flask with a calibrated neck in which the liquefied fat collects.
- back to taws — back to the beginning
- back-stopped — a wall, wire screen, or the like, serving to prevent a ball from going too far beyond the normal playing area.
- backsolution — The process or result of backsolving.
- backstopping — a wall, wire screen, or the like, serving to prevent a ball from going too far beyond the normal playing area.
- bacteriostat — any substance that arrests the growth or reproduction of bacteria but does not kill them
- bad scran to — bad luck to
- balto-slavic — the Baltic and Slavic languages, when considered as constituting a subfamily within the Indo-European family of languages: the Baltic and Slavic branches are now generally considered by scholars as independently derived from Indo-European
- basification — the process of making something alkaline
- bioacoustics — the study of animals' use of sound
- biomagnetics — the study of magnetic fields as a form of therapy
- black forest — wooded mountain region in SW Germany
- black locust — Also called false acacia, yellow locust. a North American tree, Robinia pseudoacacia, of the legume family, having pinnate leaves and clusters of fragrant white flowers.
- black sapote — a tropical American tree, Diospyros digyna, related to the persimmon, having sweet, edible, green fruit that turns black when ripe.
- black scoter — a scoter of Eurasia and North America, Melanitta nigra, the adult male of which is black.
- blastocoelic — of or relating to the blastocoel
- blastomycete — any of a genus (Blastomyces) of yeastlike imperfect fungi that cause diseases in people and animals
- book matches — safety matches made of paper and fastened into a small cardboard folder
- boot-scraper — a contraption consisting of an upright metal shape formerly placed outside some houses to enable people to scrape the mud from their boots before going in
- borosilicate — a salt of boric and silicic acids
- broadcasting — Broadcasting is the making and sending out of television and radio programmes.
- bunco artist — a confidence trickster or con artist
- cabot strait — a channel in Canada, connecting the Gulf of St. Lawrence with the Atlantic Ocean. 68 miles (109 km) wide.
- cactoblastis — a moth, Cactoblastis cactorum of South America, that was introduced into Australia to act as a biological control on the prickly pear
- cadent house — any of the four houses that precede the angles: the third, sixth, ninth, and twelfth houses, which correspond, respectively, to neighborhood and relatives, work and health, philosophy and foreign travel, and secret matters and service to others.
- cadet school — a training establishment for cadets in the army
- cafe society — people, esp intellectuals and artists who meet in cafés
- calamitously — In a calamitous manner.
- calculations — Plural form of calculation.
- calibrations — Plural form of calibration.
- caliginosity — darkness