12-letter words containing a, i, r, b, o
- baby monitor — a device that transmits sounds made by a baby to another room
- bachelorship — the state of being a bachelor; bachelorhood
- backcrossing — (genetics) The crossing of a hybrid with one of its parents or an individual genetically similar to its parent.
- bacon-slicer — a machine for cutting bacon into slices
- bacteriocide — Alternative form of bactericide.
- bacteriology — Bacteriology is the science and the study of bacteria.
- bacteriostat — any substance that arrests the growth or reproduction of bacteria but does not kill them
- ball of fire — a very lively person
- balloon tire — a wide, deep-walled pneumatic tire with relatively low air pressure to lessen the shock of bumps
- banderillero — a bullfighter's assistant who sticks banderillas into the bull
- banksia rose — a climbing rose, Rosa banksiae, native to China, having long, serrated leaves and white or yellow flowers.
- barbarossa i — (Aruj) died 1518, Barbary pirate, born in Greece.
- barcoo river — a river in E central Australia, in SW Queensland: joins with the Thomson River to form Cooper Creek
- barium oxide — a white or yellowish-white poisonous heavy powder used esp as a dehydrating agent. Formula: BaO
- barking frog — a robber frog, Hylactophryne augusti, of Texas, New Mexico, and Mexico, having a call like a dog's bark.
- barnstorming — A barnstorming performance is full of energy and very exciting to watch.
- barodynamics — the branch of mechanics concerned with heavy structures
- barometrical — (archaic) Relating to, or observed with, a barometer, barometric.
- barophoresis — the diffusion of suspended particles at a rate dependent on external forces
- barquisimeto — a city in NW Venezuela. Pop: 1 009 000 (2005 est)
- barrow point — the northernmost tip of Alaska, on the Arctic Ocean
- basidiocarps — Plural form of basidiocarp.
- basidiospore — one of the spores, usually four in number, produced in a basidium
- bathochromic — denoting or relating to a shift to a longer wavelength in the absorption spectrum of a compound
- bearing down — to hold up; support: to bear the weight of the roof.
- behaviorally — manner of behaving or acting.
- behaviourism — Behaviourism is the belief held by some psychologists that the only valid method of studying the psychology of people or animals is to observe how they behave.
- below stairs — People sometimes use below stairs to refer to the servants in a rich household and the things that are connected with them.
- beta orionis — Rigel
- beta version — beta testing
- bib overalls — overall (def 3a).
- bibliography — A bibliography is a list of books on a particular subject.
- bicollateral — (of a vascular bundle) having two phloem groups to the inside and outside, respectively, of the xylem
- bill of fare — The bill of fare at a restaurant is a list of the food for a meal from which you may choose what you want to eat.
- binary color — secondary color.
- bingo caller — the person who shouts out the numbers to bingo players
- binocularity — binocular characteristics
- bio-organism — a dangerous fast-proliferating organism that could be used as the basis of a biological weapon
- bioastronomy — the branch of biology which deals with the study or the discovery of life forms on other planets or in space
- biogeography — the branch of biology concerned with the geographical distribution of plants and animals
- biographical — Biographical facts, notes, or details are concerned with the events in someone's life.
- biohazardous — a pathogen, especially one used in or produced by biological research.
- bioinorganic — pertaining to the biological activity of metal complexes and nonmetal compounds based on elements other than carbon (contrasted with bioorganic).
- biometrician — a person who is knowledgeable about biometry
- biomolecular — relating to a biomolecule
- bioturbation — the stirring of sediment by organisms
- bipropellant — a rocket propellant consisting of two substances, usually a fuel and an oxidizer
- birthday boy — the boy or man whose birthday is being celebrated
- bitter aloes — a bitter purgative drug made from the leaves of several species of aloe
- black heroin — a very potent and addictive form of heroin that is dark-colored.