13-letter words containing or
- autoradiogram — autoradiograph
- autoresponder — A program that automatically generates a set response to all messages sent to a particular e-mail address.
- autorickshaws — Plural form of autorickshaw.
- 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.
- backdoor play — an offensive tactic whereby a player breaks away from a defender to receive a pass near the baseline in order to make a quick layup.
- 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
- ballistospore — a spore, esp a fungal spore, that is forcefully ejected from its source
- bankrupt worm — a roundworm (genus Trichostrongylus) that is an intestinal parasite of birds and mammals, especially devastating to young livestock.
- baroque organ — a pipe organ dating from or built to the specifications of the baroque period at the time of J. S. Bach.
- baroreceptors — Plural form of baroreceptor.
- basel accords — the three sets of rules, Basel I, Basel II, and Basel III, for regulating the banking industry, drawn up by the Basel Committee on Banking Supervision
- basic fortran — (language) A subset of Fortran.
- basidiospores — Plural form of basidiospore.
- batting order — the sequence in which hitters will bat in a given game, determined in advance by the team manager.
- bay for blood — If you say that people are baying for blood, you mean that they are demanding that someone should be hurt or punished.
- be spoken for — If a person or thing is spoken for or has been spoken for, someone has claimed them or asked for them, so no-one else can have them.
- bearing sword — a large sword carried for its owner by a squire or servant because of its size.
- beauty editor — the person in charge of a section of newspaper or magazine devoted to cosmetics, etc
- beauty parlor — A beauty parlor is a place where women can go to have beauty treatments, for example, to have their hair, nails, or makeup done.
- bedtime story — a story read or told to a child at bedtime
- 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.
- belly of pork — a fatty cut of meat from the pig's belly
- benton harbor — a city in SW Michigan, on Lake Michigan.
- beta receptor — a receptor, found on the surface of some cells of the sympathetic nervous system, that is stimulated by certain adrenergic substances: such stimulation results in certain physiological responses, such as acceleration of the action of the heart and dilatation of the arteries supplying heart and skeletal muscles
- beta-receptor — a site on a cell, as of the heart, that, upon interaction with epinephrine or norepinephrine, controls heartbeat and heart contractability, vasodilation, smooth muscle inhibition, and other physiological processes.
- bighorn-river — a river flowing from central Wyoming to the Yellowstone River in S Montana. 336 miles (540 km) long.
- bilinear form — a function or functional of two variables that is linear with respect to each variable when the other variable is held fixed.
- bio-terrorism — the use of living organisms and their toxic products to kill or incapacitate, esp as a political weapon
- biobehavioral — of or relating to the application of biological methods and ideas to the study of behavior in an attempt to understand emotions and reactions in terms of brain and physiological function.
- biotic factor — a living thing, as an animal or plant, that influences or affects an ecosystem: How do humans affect other biotic factors? Weather is not a biotic factor because it is not alive.
- bitter orange — a globose, reddish-yellow, bitter or sweet, edible citrus fruit.
- black hickory — a species of smooth-barked hickory, Carya tomentosa, with fragrant foliage that turns bright yellow in autumn
- blamestorming — a discussion or meeting for the purpose of assigning blame.
- book scorpion — any of various small arachnids of the order Pseudoscorpionida (false scorpions), esp Chelifer cancroides, which are sometimes found in old books, etc
- boole, george — George Boole
- boom operator — a person who operates a boom
- bootlace worm — a nemertean worm, Lineus longissimus, that inhabits shingly shores and attains lengths of over 6 m (20 ft)
- borage family — any member of the plant family Boraginaceae, typified by herbaceous plants, shrubs, and trees having simple, alternate, hairy leaves and usually blue, five-lobed flowers in a cluster that uncoils as they bloom, including borage, bugloss, and forget-me-not.
- 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
- border collie — a medium-sized breed of collie with a silky usually black-and-white coat: used mainly as sheepdogs
- border patrol — a government agency in charge of preventing terrorists, weapons, and illegal immigrants entering the country
- border police — the force in charge of policing a border
- border states — slave states bordering on the free states before the Civil War: Mo., Ky., Va., Md., & Del.
- boring sponge — any of a family (Clionidae) of sponges that settle on and dissolve the shells of clams
- boris godunov — Boris Fedorovich [bawr-is fi-dawr-uh-vich,, bohr-,, bor-;; Russian buh-ryees fyaw-duh-ruh-vyich] /ˈbɔr ɪs fɪˈdɔr ə vɪtʃ,, ˈboʊr-,, ˈbɒr-;; Russian bʌˈryis ˈfyɔ də rə vyɪtʃ/ (Show IPA), 1552–1605, regent of Russia 1584–98 and czar 1598–1605.
- borlotti bean — variety of kidney bean