12-letter words containing o, n, h, a
- approachment — (archaic) approach.
- arachnophobe — a person who is afraid of spiders
- araneomorphs — Plural form of araneomorph.
- arba kanfoth — a rectangular piece of cloth with fringes at the four corners and a hole in the center for the head, worn under the clothes by Orthodox Jewish males.
- archaization — Process of becoming or turning something more archaic.
- archdeaconry — the office, rank, or duties of an archdeacon
- archdiocesan — Relating to an archdiocese.
- archegoniate — having archegonia
- archenterons — Plural form of archenteron.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- archilochian — denoting or relating to the 7th century bc Greek poet Archilochus or his verse, esp the iambic trimeters or trochaic tetrameters used by him
- archiphoneme — an abstract linguistic unit representing two or more phonemes when the distinction between these has been neutralized: conventionally shown by a capital letter within slashes, as /T/ for /t/ and /d/ in German Rat and Rad
- archosaurian — belonging to or characteristic of the archosaurs
- ariel sharon — Ariel, 1928–2014, Israeli military and political leader; prime minister 2001–06.
- 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
- aristophanic — 448?–385? b.c, Athenian comic dramatist.
- arithmomania — an obsessive desire to count objects, or a fixation with numbers and calculations
- asphyxiation — Asphyxiation is a lack of oxygen in blood, which causes suffocation.
- astonishable — (obsolete) Astonishing.
- astonishment — Astonishment is a feeling of great surprise.
- asynchronies — a lack of synchronism or coincidence in time.
- asynchronism — a lack of synchronism; occurrence at different times
- asynchronous — An asynchronous electric machine is one in which the magnetic field and the rotation are not exactly the same.
- athos, mount — autonomous monastic district occupying the tip of the easternmost prong of the Chalcidice peninsula, NE Greece: 130 sq mi (337 sq km); pop. 1,500
- 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.
- 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.
- aykhona wena — an exclamation expressive of surprise, pain, pleasure, etc
- 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.
- azophenylene — phenazine.
- baba ghanouj — a Middle Eastern dish, a puree of broiled eggplant usually with garlic, lemon juice, and tahini, eaten with pita as an appetizer
- band of hope — a society promoting lifelong abstention from alcohol among young people: founded in Britain in 1847
- bank holiday — A bank holiday is a public holiday.
- basset hound — A basset hound is a dog with short strong legs, a long body, and long ears. It is kept as a pet or used for hunting.
- baton charge — A baton charge is an attacking forward movement made by a large group of policemen carrying batons.
- beachcombing — The action of a beachcomber.
- beacon light — a light signal for shipping
- bean-shooter — peashooter.
- betanaphthol — a colorless, crystalline isomer of naphthol, C10H8O, used as an antiseptic and parasiticide
- beyond reach — inaccessible
- biomechanics — the study of the mechanics of the movement of living organisms
- biotechnical — relating to biotechnology
- black heroin — a very potent and addictive form of heroin that is dark-colored.