12-letter words containing a, d, r, s
- anaphrodisia — diminished sexual desire.
- and so forth — and so on; and other such things; et cetera
- androgenesis — a type of reproduction in insects and plants involving the development of an embryo that contains only paternal chromosomes
- androscoggin — a river flowing from NE New Hampshire through SW Maine into the Kennebec River. 171 miles (275 km) long.
- androsterone — an androgenic steroid hormone produced in the testes. Formula: C19H30O2
- angst-ridden — characterized by a feeling of dread or anxiety
- antispinward — (often science fiction) In a rotating reference frame, against the direction of spin.
- apfelstrudel — apple strudel
- aphrodisiacs — Plural form of aphrodisiac.
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea
- applied arts — arts that are put to practical use
- aran islands — a group of three islands in the Atlantic, off the W coast of the Republic of Ireland: Aranmore or Inishmore (the largest), Inishmaan, and Inisheer. Pop: 1280 (2002). Area: 46 sq km (18 sq miles)
- archdiocesan — Relating to an archdiocese.
- archdioceses — Plural form of archdiocese.
- arched truss — a truss having an archlike form but unlike a true arch in that it is free to move horizontally at its base, as in expanding or contracting because of temperature changes.
- arctic daisy — a daisy, Chrysanthemum arcticum, of arctic regions, having asterlike heads of white or lilac flowers.
- arfvedsonite — a type of hornblende with the composition Na3(Fe,Mg)4FeSi8O22(OH)2
- armada chest — an iron or iron-bound strongbox of the 17th or 18th century.
- armed forces — The armed forces or the armed services of a country are its military forces, usually the army, navy, marines, and air force.
- arsenic acid — a white poisonous soluble crystalline solid used in the manufacture of arsenates and insecticides. Formula: H3AsO4
- arseniureted — combined with arsenic
- artiodactyls — Plural form of artiodactyl.
- arts student — a person studying an arts subject
- ash-coloured — silver-grey in colour
- ass-backward — the wrong way round; back to front; in the opposite order to what is considered normal
- assbackwards — in an order or way reverse from the usual: You've sewn the sleeve on assbackwards.
- assortedness — the position of being sorted, grouped or harmonized with, well or badly, or provided with a good or bad assortment or mixture
- astrodynamic — Pertaining to astrodynamics.
- autodestruct — likely to or possessing the power to destroy or obliterate itself or its possessor
- autodiallers — Plural form of autodialler.
- backswordman — a person who uses a backsword.
- backwardness — toward the back or rear.
- bactericides — Plural form of bactericide.
- bad scran to — bad luck to
- badger skunk — hog-nosed skunk (def 1).
- badger state — any of various burrowing, carnivorous mammals of the family Mustelidae, as Taxidea taxus, of North America, and Meles meles, of Europe and Asia.
- badger-skunk — Also called badger skunk, rooter skunk. a large, naked-muzzled skunk, Conepatus mesoleucus, common in the southwestern U.S. and Mexico, having a black coat with one broad white stripe down the back and tail.
- baker island — an island in the central Pacific near the equator, belonging to the U.S. 1 sq. mi. (2.6 sq. km).
- bald cypress — a tree, Taxodium distichum, of swampy areas of the southern U.S., having featherlike needles and cone-shaped projections growing up from the roots, yielding a hardwood used in construction, shipbuilding, etc.
- bandar abbas — a seaport in S Iran.
- 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
- bandjarmasin — Banjarmasin
- bandjermasin — a seaport on the S coast of Borneo, in Indonesia.
- barbados nut — an ornamental, tropical American tree, Jatropha curcas, of the spurge family, having ivylike leaves, small, yellow or greenish-yellow flowers, and olive-shaped fruit yielding a purgative, poisonous oil.
- bardolatrous — relating to or characterized by bardolatry
- barodynamics — the branch of mechanics concerned with heavy structures
- basal reader — an elementary-school textbook that teaches reading by combining stories with practice exercises: The Dick and Jane series was the most famous basal reader.
- basidiocarps — Plural form of basidiocarp.
- basidiospore — one of the spores, usually four in number, produced in a basidium
- bastard file — a file of the commercial grade of coarseness between coarse and second-cut.