13-letter words containing a, b, o, r
- arachnophobia — an abnormal fear of spiders
- arachnophobic — an abnormal or pathological fear of spiders.
- arbitrational — relating to, involving, or resulting from arbitration
- arboriculture — the cultivation of trees or shrubs, esp for the production of timber
- archaeobotany — the analysis and interpretation of plant remains found at archaeological sites
- archbishopric — the rank, office, or jurisdiction of an archbishop
- arithmophobia — the fear of numbers
- armed robbery — a robbery that is carried out by people carrying guns
- armored cable — an electric cable having a metal protective covering
- armour-bearer — a retainer who carried the arms or armour of a warrior
- ascorbic acid — Ascorbic acid is another name for vitamin C.
- assembly room — a room used as a public place of entertainment, usually dating from the eighteenth or nineteenth century
- asteroid belt — the concentrations of asteroids that move around the sun mainly between the orbits of Mars and Jupiter
- atomic number — the number of protons in the nucleus of an atom of an element
- atrabilarious — Characterized by melancholy or gloom.
- attributional — of or relating to the act of attributing
- autobiography — Your autobiography is an account of your life, which you write yourself.
- baal merodach — Marduk.
- baby primrose — a tender primrose, Primula forbesii, native to China and Burma, having white, hairy leaves and rose- or lilac-colored flowers with a yellow center.
- 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.
- 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.
- back walkover — Racing. a walking or trotting over the course by a contestant who is the only starter.
- 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.
- 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
- 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
- backward roll — a gymnastic roll that is performed with the feet going first and the rest of the body and the head following
- backwardation — the difference between the spot price for a commodity, including rent and interest, and the forward price
- bacteriocidal — Alternative spelling of bactericidal.
- bacteriogenic — Caused by bacteria.
- bacteriologic — a branch of microbiology dealing with the identification, study, and cultivation of bacteria and with their applications in medicine, agriculture, industry, and biotechnology.
- 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
- bacteriolytic — disintegration or dissolution of bacteria.
- bacteriophage — a virus that is parasitic in a bacterium and multiplies within its host, which is destroyed when the new viruses are released
- bacteriophagy — the action of a bacteriophage
- bacterioscopy — the examination of bacteria with a microscope.
- bacteriostats — Plural form of bacteriostat.
- bacteriotoxin — any toxin that kills bacteria
- bacterization — subjection to bacterial action
- bad godesberg — official name of Godesberg.
- bag of tricks — a container or receptacle of leather, plastic, cloth, paper, etc., capable of being closed at the mouth; pouch.
- bag of waters — a fluid-filled membranous sac in the pregnant uterus that encloses and cushions the fetus, normally breaking at or just before the time of birth; the amnion.
- baker's dozen — thirteen
- baking powder — Baking powder is an ingredient used in cake making. It causes cakes to rise when they are in the oven.