13-letter words containing a, c, e, s, i, o
- ascension day — the 40th day after Easter, when the Ascension of Christ into heaven is celebrated
- ascensiontide — the ten days from Ascension Day to the day before Whit Sunday
- ascoli piceno — a town in E central Italy, in the Marches: capital of the Roman province of Picenum; site of the massacre of all its Roman citizens in the Social War in 90 bc. Pop: 51 375 (2001)
- associateship — to connect or bring into relation, as thought, feeling, memory, etc.: Many people associate dark clouds with depression and gloom.
- associatively — in an associative or connective manner
- astroparticle — (astrophysics) A subatomic particle of cosmic origin.
- athletic shoe — a shoe designed to be worn for sports, exercising, or recreational activity, as racquetball, jogging, or aerobic dancing.
- atmospherical — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.
- atrociousness — The state of being atrocious.
- auction house — a commercial company that specializes in selling items at auction
- audaciousness — Risky or daring behaviour.
- audiocassette — a cassette containing audiotape
- autoeroticism — the arousal and use of one's own body as a sexual object, as through masturbation
- automechanism — an automatic mechanical system or component, especially a device that operates automatically under predetermined conditions.
- autoschediasm — anything done with little forethought or preparation
- autoschediaze — to do or act with little forethought or preparation
- back emission — the secondary emission of electrons from an anode
- backbone site — A key Usenet, electronic mail and/or Internet site; one that processes a large amount of third-party traffic, especially if it is the home site of any of the regional coordinators for the Usenet maps. Notable backbone sites as of early 1993 include uunet and the mail machines at Rutgers University, UC Berkeley, DEC's Western Research Laboratories, Ohio State University and the University of Texas. Compare rib site, leaf site.
- backing store — a computer storage device, usually a disk, that provides additional storage space for information so that it can be accessed and referred to when required and may be copied into the processor if needed
- bacteriolysin — an antibody which, when it combines with bacterial cells, causes lysis of those cells, thus destroying them
- bacteriolysis — the destruction or disintegration of bacteria
- bacterioscopy — the examination of bacteria with a microscope.
- bacteriostats — Plural form of bacteriostat.
- baseline cost — the projected cost for an undertaking at the time it is budgeted
- basic process — Military. basic training. a soldier or airman receiving basic training.
- basidiomycete — any fungus of the phylum Basidiomycota (formerly class Basidiomycetes), in which the spores are produced in basidia. The group includes boletes, puffballs, smuts, and rusts
- 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.
- bignoniaceous — of, relating to, or belonging to the Bignoniaceae, a chiefly tropical family of trees, shrubs, and lianas, including jacaranda, bignonia, and catalpa
- biosystematic — relating to biosystematics
- bisectionally — from a bisectional point of view
- black section — (in Britain in the 1980s) an unofficial group within the Labour Party in any constituency that represented the interests of local Black people
- blasco ibanez — Vicente (biˈθente). 1867–1928, Spanish novelist, whose books include Blood and Sand (1909) and The Four Horsemen of the Apocalypse (1916)
- bois de vache — dried buffalo dung, used as fuel by Canadian and U.S. fur trappers in the 18th and 19th centuries.
- boraginaceous — of, relating to, or belonging to the Boraginaceae, a family of temperate and tropical typically hairy-leaved flowering plants that includes forget-me-not, lungwort, borage, comfrey, and heliotrope
- brassicaceous — belonging to the plant family Brassicaceae, an alternative name for the plant family Cruciferae.
- by contraries — contrary to what is expected
- caesaropapism — the theory that the state should have authority over the church in ecclesiastical matters; Erastianism
- caesium clock — a type of atomic clock that uses the frequency of radiation absorbed in changing the spin of electrons in caesium atoms
- calcariferous — having a spur or spurs
- camping stove — a portable stove powered by butane gas canisters, designed to be used for cooking while camping
- campus police — police officers, security guards or students employed by a college or university to patrol the campus and to protect students, staff, and visitors
- cancellations — Plural form of cancellation.
- capaciousness — capable of holding much; spacious or roomy: a capacious storage bin.
- carbon tissue — a sheet of paper coated with pigmented gelatine, used in the carbon process
- carbon-tissue — paper faced with a preparation of carbon or other material, used between two sheets of plain paper in order to reproduce on the lower sheet that which is written or typed on the upper.
- carboniferous — yielding coal or carbon
- cardiopathies — Plural form of cardiopathy.
- cardioversion — restoring the rhythm of the heart to normal by applying direct-current electrical shock.
- carillonneurs — Plural form of carillonneur.
- carol service — a service, held in a church around Christmas, at which Christmas carols are sung