13-letter words containing a, c, t, o, n
- auction pitch — a variety of all fours in which players bid to determine the trump or pitch.
- auctioneering — Present participle of auctioneer.
- authenticator — a person or thing that authenticates.
- auto-injector — An auto-injector is a hypodermic syringe that you can use to inject yourself with a liquid.
- autochthonous — (of rocks, deposits, etc) found where they and their constituents were formed
- autoinfection — infection by a pathogenic agent already within the body or infection transferred from one part of the body to another
- automechanism — an automatic mechanical system or component, especially a device that operates automatically under predetermined conditions.
- autonomically — autonomous.
- 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
- avocationally — in one's leisure time
- back mutation — the reversion of a mutant to the original phenotype
- back to front — If you are wearing something back to front, you are wearing it with the back of it at the front of your body. If you do something back to front, you do it the wrong way around, starting with the part that should come last.
- 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.
- backformation — Alternative spelling of back-formation.
- 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
- backwardation — the difference between the spot price for a commodity, including rent and interest, and the forward price
- bacteriogenic — Caused by bacteria.
- bacteriolysin — an antibody which, when it combines with bacterial cells, causes lysis of those cells, thus destroying them
- bacteriotoxin — any toxin that kills bacteria
- bacterization — subjection to bacterial action
- badminton cup — a long refreshing drink of claret with soda water and sugar
- bandicoot rat — any of three burrowing rats of the genera Bandicota and Nesokia, of S and SE Asia: family Muridae
- bank discount — interest on a loan deducted from the principal amount when the loan is made and based on the loan's face value
- baritone clef — an F clef locating F below middle C on the third line of the staff.
- baroclinicity — a common state of fluid stratification in which surfaces of constant pressure and others of constant density are not parallel but intersect.
- baseline cost — the projected cost for an undertaking at the time it is budgeted
- basement-rock — the undifferentiated assemblage of rock (basement rock) underlying the oldest stratified rocks in any region: usually crystalline, metamorphosed, and mostly, but not necessarily, Precambrian in age.
- basic fortran — (language) A subset of Fortran.
- 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 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
- beatification — a beatifying or being beatified
- benedictional — a book of benedictions or blessings
- beneficiation — the procedure of reducing ores
- benthopelagic — relating to species living at the bottom of the sea
- benzalacetone — benzylidene acetone.
- beta carotene — a yellowish form of carotene: a dietary deficiency of this is associated with a greater risk of certain cancers
- 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.
- beta-blocking — acting to inhibit the activity of the nerves that are stimulated by adrenaline
- beta-carotene — the most abundant of various isomers of carotene, C 40 H 56 , that can be converted by the body to vitamin A.
- biconditional — (of a proposition) asserting that the existence or occurrence of one thing or event depends on, and is dependent on, the existence or occurrence of another, as “A if and only if B.”.
- bicontinental — of, on, or involving two continents: a bicontinental survey.
- bidirectional — (of a printhead) capable of printing from left to right and from right to left
- bisectionally — from a bisectional point of view
- black country — a district in the English Midlands, around Birmingham: so called from the soot and grime produced by the many local industries.
- 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
- boat neckline — a wide, high neckline that follows the curve of the collarbone and ends in points on the shoulder seams.
- body snatcher — (formerly) a person who robbed graves and sold the corpses for dissection
- bona vacantia — unclaimed goods
- bouncy castle — A bouncy castle is a large object filled with air, often in the shape of a castle, which children play on at a fairground or other outdoor event.