12-letter words containing a, t, h, e, r
- archeopteryx — A specimen of the species Archaeopteryx lithographica, being the earliest and most primitive known bird, representing a transition in the evolution of dinosaurs to birds.
- archetypally — the original pattern or model from which all things of the same kind are copied or on which they are based; a model or first form; prototype.
- archetypical — Archetypical means the same as archetypal.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- architecting — a person who engages in the profession of architecture.
- architecture — Architecture is the art of planning, designing, and constructing buildings.
- archive site — (networking) (Or "FTP site", "FTP archive") An Internet host where program source, documents, e-mail or news messages are stored for public access via anonymous FTP, Gopher, web or other document distribution system. There may be several archive sites (mirrors) for, e.g., a Usenet newsgroup though one may be recognised as the main one. FTP servers were common on the Internet for about ten years but have been largely replaced by web servers since the invention of the World-Wide Web and its HTTP protocol. Some well-known archive sites included Imperial College, UK, UUNET, USA, GNU archive site. The archie service attempted to index the contents of FTP archives, foreshadowing the indexing of the web by Google and others.
- aristophanes — ?448–?380 bc, Greek comic dramatist, who satirized leading contemporary figures such as Socrates and Euripides. Eleven of his plays are extant, including The Clouds, The Frogs, The Birds, and Lysistrata
- arithmetical — Arithmetical calculations, processes, or skills involve the addition, subtraction, multiplication, or division of numbers.
- arm's-length — lacking intimacy or friendliness, esp when possessing some special connection, such as previous closeness
- armada chest — an iron or iron-bound strongbox of the 17th or 18th century.
- arming chest — a chest for holding armor and weapons.
- aromatherapy — Aromatherapy is a type of treatment which involves massaging the body with special fragrant oils.
- array theory — (theory) A theory developed by Trenchard More Jr. and used as the basis for the NIAL language. Papers are available from the IBM Cambridge Scientific Center, Cambridge MA.
- arteriopathy — Any disease of the arteries.
- arthrobacter — a genus of rod-shaped or spherical bacteria found in the soil.
- arthroscopes — Plural form of arthroscope.
- 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.
- astrochemist — (chemistry, astronomy) A chemist or astronomer whose speciality is astrochemistry.
- at a stretch — with some difficulty; by making a special effort
- at the press — being printed
- at the ready — If you have something at the ready, you have it in a position where it can be quickly and easily used.
- 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.
- atharva-veda — the fourth and latest Veda, largely consisting of priestly spells and incantations
- atheoretical — having no connection with and not founded on theory
- atheromatous — a sebaceous cyst.
- atholl brose — a mixture of whisky and honey left to ferment before consumption
- 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)
- attenborough — Sir David. born 1926, British naturalist and broadcaster; noted esp for his TV series Life on Earth (1978), The Living Planet (1983), The Life of Birds (1998), The Life of Mammals (2002), and First Life (2010)
- attorneyship — The office or profession of an attorney.
- authorizable — able to be authorized
- autochangers — Plural form of autochanger.
- azathioprine — a synthetic drug that suppresses the normal immune responses of the body and is administered orally during and after organ transplantation and also in certain types of autoimmune disease. Formula: C9H7N7O2S
- baby brother — a younger brother
- bach trumpet — a modern small three-valved trumpet for playing clarino passages in Bach's music
- bachelorette — A bachelorette is a woman who has never married.
- 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
- baluchithere — a hornless rhinoceros of the extinct genus Baluchitherium that inhabited central Asia during the Oligocene and early Miocene epochs: the largest land mammal known.
- 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