12-letter words containing a, r, h, t, s
- arthroscopes — Plural form of arthroscope.
- arthroscopic — the use of an arthroscope to diagnose an injury to or disease of a joint or to perform minor surgery on a joint.
- arthrospores — an isolated vegetative cell that has passed into a resting state, occurring in bacteria and not regarded as a true spore.
- arthrotomies — Plural form of arthrotomy.
- arthur evans — Sir Arthur John, 1851–1941, English archaeologist.
- artzybasheff — Boris Mikhailovich [bawr-is mi-kahy-luh-vich,, bor-;; Russian buh-ryees myi-khahy-luh-vyich] /ˈbɔr ɪs mɪˈkaɪ lə vɪtʃ,, ˈbɒr-;; Russian bʌˈryis myɪˈxaɪ lə vyɪtʃ/ (Show IPA), 1899–1965, U.S. illustrator and writer, born in Russia.
- asphalt rock — a rock formation, usually of limestone or sandstone, containing large amounts of bitumens.
- astrochemist — (chemistry, astronomy) A chemist or astronomer whose speciality is astrochemistry.
- astrophysics — Astrophysics is the study of the physical and chemical structure of the stars, planets, and other natural objects in space.
- at a stretch — with some difficulty; by making a special effort
- at all hours — If you say that something happens at all hours of the day or night, you disapprove of it happening at the time that it does or as often as it does.
- at the press — being printed
- at the worst — bad or ill in the highest, greatest, or most extreme degree: the worst person.
- at this rate — If you say that at this rate something bad or extreme will happen, you mean that it will happen if things continue to develop as they have been doing.
- atheromatous — a sebaceous cyst.
- atholl brose — a mixture of whisky and honey left to ferment before consumption
- athrocytosis — the capability of a cell to receive and store matter
- athwartships — from one side to the other of a vessel at right angles to the keel
- atmospherics — Atmospherics are elements in something such as a piece of music or a book which create a certain atmosphere.
- 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.
- atom smasher — accelerator (sense 3)
- attorneyship — The office or profession of an attorney.
- australopith — (archaeology, anthropology, paleonotology) Of or pertaining to the extinct hominid primates, of the genus Australopithecus, from the Pleistocene period.
- autochangers — Plural form of autochanger.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autorickshaw — (in India) a light three-wheeled vehicle driven by a motorcycle engine
- back stretch — the straight part of a race track opposite the part leading to the finish line.
- bag snatcher — a thief whose main tactic is to grab women's handbags and run off with them
- bairnsfather — Bruce. 1888–1959, British cartoonist, born in India: best known for his cartoons of the war in the trenches during World War I
- bandersnatch — a fictional creature created by Lewis Carroll in his poem Jabberwocky, and appearing also in The Hunting of the Snark and Through the Looking-Glass
- baraesthesia — the ability to sense pressure
- bashkirtseff — Marie, original name Marya Konstantinovna Bashkirtseva. 1858–84, Russian painter and diarist who wrote in French, noted esp for her Journal (1887)
- basket chair — a chair made of wickerwork; a wicker chair
- basque shirt — a knitted pullover shirt having a crew neck, long or short sleeves, and a pattern of horizontal stripes.
- bathyspheres — Plural form of bathysphere.
- bean-shooter — peashooter.
- belteshazzar — the Babylonian name given to Daniel. Dan. 1:7.
- beth midrash — a place where Jews gather to study the Talmud and other religious writings; a small synagogue.
- blastosphere — blastula
- blatherskite — a talkative silly person
- bletherskate — a blatherer
- board shorts — shorts with longer legs, originally meant to protect a surfer's legs against the surfboard
- bottlewasher — a person or machine that washes bottles.
- breast wheel — a waterwheel onto which the propelling water is fed at the height of a horizontal axle.
- breastplough — a plough driven by the worker's breast, often used to pare turf
- breathalyser — a device for estimating the amount of alcohol in the breath: used in testing people suspected of driving under the influence of alcohol
- breathe easy — to take air, oxygen, etc., into the lungs and expel it; inhale and exhale; respire.
- breathlessly — without breath or breathing with difficulty; gasping; panting: We were breathless after the steep climb.
- bright spark — If you say that some bright spark had a particular idea or did something, you mean that their idea or action was clever, or that it seemed clever but was silly in some way.
- british rail — the organization that ran the British railway system from 1948 until privatization in the mid-1990s