12-letter words containing a, r, u, m
- atmospherium — an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome.
- auction room — a room in a building where auctions take place
- autapomorphy — (cladistics) A derived trait that is unique to a particular taxon.
- auto-erotism — the arousal and satisfaction of sexual excitement within or by oneself, as by masturbation.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autorhythmic — That generates its own rhythm.
- axe-murderer — someone who commits murderer with an axe
- baba au rhum — a light cake raised with yeast, containing raisins and dried fruits and soaked in a rum syrup
- bach trumpet — a modern small three-valved trumpet for playing clarino passages in Bach's music
- backcourtman — any of the players stationed in the backcourt; a guard
- banquet room — A banquet room is a room in a hotel where large formal meals for many people can be held.
- barium enema — an injection into the rectum of a preparation of barium sulphate, which is opaque to X-rays, before X-raying the lower alimentary canal
- barium oxide — a white or yellowish-white poisonous heavy powder used esp as a dehydrating agent. Formula: BaO
- barium x-ray — gastrointestinal series: x-ray examination of the upper or lower gastrointestinal tract after barium sulfate is given rectally (barium enema) or orally as a contrast medium.
- barquisimeto — a city in NW Venezuela. Pop: 1 009 000 (2005 est)
- bay rum tree — a tropical American myrtaceous tree, Pimenta racemosa, that yields an oil used in making bay rum
- beaumarchais — Pierre Augustin Caron de (pjɛr oɡystɛ̃ karɔ̃ də). 1732–99, French dramatist, noted for his comedies The Barber of Seville (1775) and The Marriage of Figaro (1784)
- beauty cream — a cosmetic cream
- 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.
- bermuda high — a subtropical high centered near Bermuda.
- bermuda lily — a lily, Lilium longiflorum eximium, having white, funnel-shaped flowers, cultivated especially as an Easter lily.
- beurre manie — butterpaste.
- biomolecular — relating to a biomolecule
- birth trauma — an emotional shock caused by being born.
- blabbermouth — a person who talks too much or indiscreetly
- bottom quark — a type of quark with a mass of c. 4.7 to 5.3 GeV/c2, a negative charge that is 1⁄3 the charge of an electron, zero charm, and zero strangeness
- bradmanesque — (of a batsman or innings) reminiscent of Sir Don Bradman in terms of dominance over the opposing bowlers
- brain tumour — a tumour that is situated in the brain
- breastsummer — a girder extending across a large opening in a building to support the wall above, used primarily over shop-fronts
- broad jumper — a participant in the long jump.
- bumper guard — either of two vertical crosspieces attached to a bumper of a motor vehicle to prevent it from locking bumpers with another vehicle.
- bumping race — (esp at Oxford and Cambridge) a race in which rowing eights start an equal distance one behind the other and each tries to bump the boat in front
- bur marigold — any plant of the genus Bidens that has yellow flowers and pointed fruits that cling to fur and clothing: family Asteraceae (composites)
- burial mound — a barrow
- burmese jade — jadeite of the finest quality: a true jade.
- burnt almond — a sweet consisting of an almond enclosed in burnt sugar
- buy the farm — a tract of land, usually with a house, barn, silo, etc., on which crops and often livestock are raised for livelihood.
- calumniators — Plural form of calumniator.
- calumniatory — of, involving, or using calumny; slanderous; defamatory.
- camelopardus — a faint extensive constellation in the N hemisphere close to Ursa Major and Cassiopeia
- camper truck — a pickup truck having a camper mounted on the truck body.
- carbamylurea — biuret.
- centumvirate — the office of the centumviri
- cerium metal — any of a subgroup of rare-earth metals, of which the terbium and yttrium metals comprise the other two subgroups.
- chambersburg — a city in central Pennsylvania.
- chaulmoogras — Plural form of chaulmoogra.
- chlorambucil — an alkylating drug derived from nitrogen mustard, administered orally in the treatment of leukaemia and other malignant diseases. Formula: C14H19Cl2NO2
- chorusmaster — the conductor of a choir
- circular mil — a unit of area of cross section of wire, equal to the area of a circle whose diameter is one thousandth of an inch. 1 circular mil is equal to 0.785 × 10–6 square inch or 0.2 × 10–9 square metre
- circumbinary — (astronomy) Of, pertaining to, or having an orbit around a binary star.