12-letter words containing a, r, m, t
- 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.
- axisymmetric — being symmetrical around an axis
- azithromycin — A macrolide antibiotic derived from erythromycin.
- baby monitor — a device that transmits sounds made by a baby to another room
- 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
- bad-tempered — Someone who is bad-tempered is not very cheerful and gets angry easily.
- bagworm moth — any moth of the family Psychidae
- ballad metre — the metre of a ballad stanza
- banquet room — A banquet room is a room in a hotel where large formal meals for many people can be held.
- barnstormers — Plural form of barnstormer.
- barnstorming — A barnstorming performance is full of energy and very exciting to watch.
- barometrical — (archaic) Relating to, or observed with, a barometer, barometric.
- barquisimeto — a city in NW Venezuela. Pop: 1 009 000 (2005 est)
- basket maker — a member of an early Native American people of the southwestern US, preceding the Pueblo people, known for skill in basket-making
- basmati rice — a variety of long-grain rice with slender aromatic grains, used for savoury dishes
- bathochromic — denoting or relating to a shift to a longer wavelength in the absorption spectrum of a compound
- battery farm — a farm that uses batteries for raising poultry
- bay rum tree — a tropical American myrtaceous tree, Pimenta racemosa, that yields an oil used in making bay rum
- beamsplitter — Alternative spelling of beam splitter.
- beauty cream — a cosmetic cream
- beech marten — stone marten.
- beta emitter — a radioactive element, either natural or artificial, which changes into another element by emitting a beta particle
- beth midrash — a place where Jews gather to study the Talmud and other religious writings; a small synagogue.
- bhakti-marga — any of the three ways to salvation, which are those of devotion to certain gods (bhakti-marga) of study (jnana-marga) and of actions (karma-marga)
- bilateralism — the practice of being bilateral
- bioastronomy — the branch of biology which deals with the study or the discovery of life forms on other planets or in space
- biometrician — a person who is knowledgeable about biometry
- birth family — one's biological parents and siblings, as contrasted with one's adoptive family.
- birth trauma — an emotional shock caused by being born.
- blabbermouth — a person who talks too much or indiscreetly
- black market — If something is bought or sold on the black market, it is bought or sold illegally.
- black stream — a warm ocean current in the Pacific, flowing N along the E coast of Taiwan, NE along the E coast of Japan, and continuing in an easterly direction into the open Pacific.
- black-market — to black-marketeer.
- bomb factory — a site or building in which terrorists illicitly and secretly create bombs
- boomer state — Oklahoma
- bottom break — a branch coming from the bottom of a plant stem, usually formed by pinching and disbudding.
- bottom grass — any grass that grows on bottoms or lowlands.
- 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
- bracket lamp — a wall light that is attached to the wall by a bracket
- brain tumour — a tumour that is situated in the brain
- brainstormer — a person who brainstorms
- breastsummer — a girder extending across a large opening in a building to support the wall above, used primarily over shop-fronts
- brigham city — a city in N Utah.
- british warm — an army officer's short thick overcoat
- bromoacetone — a colorless and highly toxic liquid, CH 2 BrCOCH 3 , used as a lachrymatory compound in tear gas and chemical warfare gas.