13-letter words containing c, h, a, o
- atomic weight — the weight of one atom of an element expressed in atomic mass units: it is the average weight of all the isotopes of the element
- auction house — a commercial company that specializes in selling items at auction
- auction pitch — a variety of all fours in which players bid to determine the trump or pitch.
- audiographics — audiographic teleconferencing
- autapomorphic — (biology) Describing any characteristic that has evolved in only a single species (or other taxon).
- authenticator — a person or thing that authenticates.
- autocatharsis — a therapeutic process designed to free unconscious disturbances by having the patient write about his or her experiences, impressions, etc.
- autocephalous — (of an Eastern Christian Church) governed by its own national synods and appointing its own patriarchs or prelates
- autochthonous — (of rocks, deposits, etc) found where they and their constituents were formed
- autographical — Relating to, or used in, the process of autography.
- automechanism — an automatic mechanical system or component, especially a device that operates automatically under predetermined conditions.
- autorickshaws — Plural form of autorickshaw.
- autoschediasm — anything done with little forethought or preparation
- autoschediaze — to do or act with little forethought or preparation
- avila camacho — Manuel [mah-nwel] /mɑˈnwɛl/ (Show IPA), 1897–1955, president of Mexico 1940–46.
- baal merodach — Marduk.
- bachelor flat — a flat lived in, or intended for a bachelor
- bachelor girl — a young unmarried woman, esp one who is self-supporting
- bachelor seal — a young male seal, esp a fur seal, that has not yet mated
- bachelorettes — Plural form of bachelorette.
- bacillophobia — The fear of microbes. Also known as germaphobia.
- bacteriophage — a virus that is parasitic in a bacterium and multiplies within its host, which is destroyed when the new viruses are released
- bacteriophagy — the action of a bacteriophage
- ballet school — a school where professional ballet dancers are trained
- balloon chuck — a lathe chuck having the form of a hollow hemisphere, for enclosing and holding small parts, as balance staffs of watches, so that only their ends are exposed.
- batch-process — to perform batch processing on (files)
- batrachotoxin — a steroidal alkaloid, C31H42N2O6, found in the skin of certain Neotropical frogs (genus Phyllobates) and used on poison arrows: one of the most powerful natural neurotoxins known
- beacon school — a notably successful school whose methods and practices are brought to the attention of the education service as a whole in order that they may be adopted by other schools
- behavioristic — the theory or doctrine that human or animal psychology can be accurately studied only through the examination and analysis of objectively observable and quantifiable behavioral events, in contrast with subjective mental states.
- benthopelagic — relating to species living at the bottom of the sea
- bibliographic — a complete or selective list of works compiled upon some common principle, as authorship, subject, place of publication, or printer.
- bibliothecary — a librarian
- biochemically — the science dealing with the chemistry of living matter.
- biomechanical — relating to biomechanics
- black hickory — a species of smooth-barked hickory, Carya tomentosa, with fragrant foliage that turns bright yellow in autumn
- blood alcohol — alcohol that is circulating in the blood
- body snatcher — (formerly) a person who robbed graves and sold the corpses for dissection
- bois de vache — dried buffalo dung, used as fuel by Canadian and U.S. fur trappers in the 18th and 19th centuries.
- bounced flash — a flash bounced off a reflective surface, as a ceiling or wall, to illuminate a subject indirectly.
- bowling match — a game of bowls
- boynton beach — a city in SE Florida.
- brachiosaurus — a dinosaur of the genus Brachiosaurus, up to 30 metres long: the largest land animal ever known
- brachypterous — having very short or incompletely developed wings
- branch office — the local branch of a bank, shop, or other business
- breech-loader — a firearm that is loaded at the breech
- breechloading — loaded at the breech.
- broad hatchet — a hatchet with a broad cutting edge.
- broca-aphasia — a type of aphasia caused by a lesion in Broca's area of the brain, characterized by misarticulated speech and lack of grammatical morphemes.
- bronchography — radiography of the bronchial tubes after the introduction of a radiopaque medium into the bronchi
- buenas noches — good night