13-letter words containing a, c, u
- autochthonous — (of rocks, deposits, etc) found where they and their constituents were formed
- autodidactism — Alternative form of autodidacticism.
- autoeroticism — the arousal and use of one's own body as a sexual object, as through masturbation
- autographical — Relating to, or used in, the process of autography.
- autoinfection — infection by a pathogenic agent already within the body or infection transferred from one part of the body to another
- automagically — automatically; in a way that is hidden from or not understood by the user, and in that sense, apparently “magical”: I downloaded an app that automagically adds a travel itinerary to my calendar whenever I buy a plane ticket.
- automatically — without volition or from force of habit; mechanically: Whenever I hear that song, I automatically think of my dad.
- automechanism — an automatic mechanical system or component, especially a device that operates automatically under predetermined conditions.
- autonomically — autonomous.
- autoprojector — (theory) A self-applicable partial evaluator.
- autorickshaws — Plural form of autorickshaw.
- autoschediasm — anything done with little forethought or preparation
- autoschediaze — to do or act with little forethought or preparation
- autotoxicosis — autointoxication.
- autumn crocus — a liliaceous plant, Colchicum autumnale, of Europe and N Africa having pink or purplish autumn flowers
- averruncation — the act of averting or turning away
- ayurvedically — As a practitioner of Ayurveda; in an Ayurvedic way.
- azurmalachite — a blue-green ornamental stone consisting of a mixture of azurite and malachite.
- baccalaureate — The baccalaureate is an examination taken by students at the age of eighteen in France and some other countries.
- back mutation — the reversion of a mutant to the original phenotype
- back pressure — the pressure that opposes the motion of a piston on its exhaust stroke in an internal-combustion engine
- back-up light — a light on the rear of a motor vehicle to warn others that the vehicle is being reversed
- backgrounders — Plural form of backgrounder.
- backgrounding — Present participle of background.
- backing group — a group of musicians providing an instrumental or vocal accompaniment for a pop singer
- badminton cup — a long refreshing drink of claret with soda water and sugar
- balanced fund — a mutual fund made up of both stocks and bonds
- 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.
- balsam spruce — either of two North American coniferous trees of the genus Picea, P. pungens (the blue spruce) or P. engelmanni
- bancassurance — the selling of insurance products by a bank to its customers
- band spectrum — a spectrum consisting of a number of bands of closely spaced lines that are associated with emission or absorption of radiation by molecules
- bank discount — interest on a loan deducted from the principal amount when the loan is made and based on the loan's face value
- barcoo salute — a movement of the hand to brush flies away from the face
- barrel cactus — any of several large, cylindrical, ribbed, spiny cacti of the genera Echinocactus and Ferocactus.
- basic plumage — the plumage assumed by an adult bird at its complete, usually annual, molt.
- basket clause — an all-inclusive or comprehensive clause in a contract
- bathtub curve — Common term for the curve (resembling an end-to-end section of one of those claw-footed antique bathtubs) that describes the expected failure rate of electronics with time: initially high, dropping to near 0 for most of the system's lifetime, then rising again as it "tires out". See also burn-in period, infant mortality.
- battlecruiser — A large warship of a type built in the early 20th century, carrying similar armament to a battleship but faster and more lightly armored.
- beacon status — a ranking awarded by the government to an organization, rendering it eligible for extra funding, and aimed at encouraging organizations to share good practice with each other
- bearer cheque — a cheque payable to the person who has it
- bell purchase — a tackle consisting of two standing single blocks, two running single blocks, a fall, and a runner, so arranged that it gives a mechanical advantage of six, neglecting friction.
- bengal quince — bael.
- beta function — a function of two variables, usually expressed as an improper integral and equal to the quotient of the product of the values of the gamma function at each variable divided by the value of the gamma function at the sum of the variables.
- biculturalism — the characteristics, or policy, of a two-cultured society
- bidenticulate — having two small teeth or toothlike processes.
- bignoniaceous — of, relating to, or belonging to the Bignoniaceae, a chiefly tropical family of trees, shrubs, and lianas, including jacaranda, bignonia, and catalpa
- bimolecularly — in a bimolecular fashion
- bioaccumulate — (of substances, esp toxins) to build up within the tissues of organisms
- birectangular — having two right angles.
- biscuit bread — biscuits or a biscuit: I like biscuit bread more than corn bread for supper.