12-letter words containing a, t, h
- 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)
- attache case — An attaché case is a flat case for holding documents.
- 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.
- atychiphobia — (rare) The fear of failure.
- australopith — (archaeology, anthropology, paleonotology) Of or pertaining to the extinct hominid primates, of the genus Australopithecus, from the Pleistocene period.
- autapomorphy — (cladistics) A derived trait that is unique to a particular taxon.
- authenticate — If you authenticate something, you state officially that it is genuine after examining it.
- authenticity — the quality or state of being authentic; reliability; genuineness
- authorizable — able to be authorized
- autochangers — Plural form of autochanger.
- autochthonal — Existing where it was formed or born; native, aboriginal, indigenous.
- autochthones — Alternative spelling of autochthons.
- autochthonic — pertaining to autochthons; aboriginal; indigenous (opposed to heterochthonous).
- autographing — Present participle of autograph.
- autohypnosis — the process or result of self-induced hypnosis
- autohypnotic — Of or pertaining to autohypnosis; self-hypnotizing.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autorhythmic — That generates its own rhythm.
- autorickshaw — (in India) a light three-wheeled vehicle driven by a motorcycle engine
- autotheistic — Self-worshiping; prideful in the extreme.
- 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
- azithromycin — A macrolide antibiotic derived from erythromycin.
- b'nai b'rith — a Jewish fraternal organization founded in New York in 1843, having moral, philanthropic, social, educational, and political aims
- 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.
- back-kitchen — a room off a main kitchen, usually further towards the back of the house where washing-up or preparatory cooking work might be done; a scullery
- backlighting — Movies, Television. a light source placed behind an actor, object, or scene to create a highlight that separates the subject from the background.
- backstitches — Plural form of backstitch.
- backup light — Backup lights are the white lights on the back of a vehicle that shine when the vehicle moves backward.
- bag snatcher — a thief whose main tactic is to grab women's handbags and run off with them
- bagworm moth — any moth of the family Psychidae
- baha'í faith — a religious system founded in 1863 by Baha'ullah, based on Babism and emphasizing the value of all religions and the spiritual unity of all mankind
- bairnsfather — Bruce. 1888–1959, British cartoonist, born in India: best known for his cartoons of the war in the trenches during World War I
- baking sheet — A baking sheet is a flat piece of metal on which you bake foods such as biscuits or pies in an oven.
- 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
- bantamweight — A bantamweight is a boxer who weighs between 51 and 53.5 kilograms, or a wrestler who weighs between 52 and 57 kilograms. A bantamweight is heavier than a flyweight but lighter than a featherweight.
- 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)
- basic weight — basis weight.
- basis weight — the weight in pounds of a ream of paper of a basic size, usually 25 × 38 inches (63 × 96 cm) for book stock, 17 × 22 inches (43 × 55 cm) for writing stock, and 20 × 26 inches (50 × 66 cm) for cover stock.
- basket catch — a catch made with open glove with the palm up and the wrist kept close to and in front of the body.
- basket chair — a chair made of wickerwork; a wicker chair