12-letter words containing a, s, u
- ankylosaurus — a plant-eating dinosaur of the Cretaceous period that had a tail resembling a club and a body covering of thick scales
- annunciators — Plural form of annunciator.
- anotherguess — of a different type or kind; different
- antependiums — Plural form of antependium.
- anthocarpous — resembling or pertaining to an anthocarp
- anthophagous — That feeds on flowers.
- anthophilous — (esp of insects) frequenting flowers
- anti-judaism — the monotheistic religion of the Jews, having its ethical, ceremonial, and legal foundation in the precepts of the Old Testament and in the teachings and commentaries of the rabbis as found chiefly in the Talmud. Compare Conservative Jew, Orthodox Jew, Reform Jew.
- antibacchius — a metrical foot consisting of three syllables, of which the first two are long and the third is short
- antibarbarus — a list of words and sayings to be avoided in the classical usage of a language
- antibusiness — opposed to business interests, particularly those of large-scale corporations
- anticonsumer — opposed to consumerism
- antigonus ii — (Gonatus) c319–239 b.c, king of Macedonia 283–239 (son of Demetrius I).
- antihumanism — opposition to humanism
- antimosquito — acting against mosquitoes
- antineutrons — Plural form of antineutron.
- antinucleons — Plural form of antinucleon.
- antiochus iv — ?215–164 bc, Seleucid king of Syria (175–164), who attacked the Jews and provoked the revolt of the Maccabees
- antipetalous — standing before the petals of a plant
- antipleasure — opposed to pleasure
- antiquarians — Plural form of antiquarian.
- antique shop — a shop where antiques are sold
- antirrhinums — Plural form of antirrhinum.
- antisepalous — facing the sepals or calyx leaf
- antitussives — Plural form of antitussive.
- antoninianus — an ancient Roman coin made either of silver or bronze and equal in value to two denarii
- anuszkiewicz — Richard Joseph, born 1930, U.S. op-art painter.
- anxious seat — a bench near the preacher at revival meetings, for those with a troubled conscience who seek salvation
- anzus treaty — Australia, New Zealand, and the United States, especially as associated in the mutual defense treaty (ANZUS Pact or ANZUS Treaty) of 1952.
- apfelstrudel — apple strudel
- apiculturist — beekeeping, especially on a commercial scale for the sale of honey.
- apocynaceous — of, relating to, or belonging to the Apocynaceae, a family of mostly tropical flowering plants with latex in their stems, including the dogbane, periwinkle, oleander, and some lianas
- applausively — in an applausive manner
- apple sucker — a small homopterous insect, Psyllia mali, originally of Europe, that is a serious pest of apple crops.
- appressorium — a flattened hypha of a parasitic fungus that penetrates the host tissues
- aquaintances — Plural form of aquaintance.
- arbitrageurs — Plural form of arbitrageur.
- arc spectrum — a spectrum formed from the light produced by an electric arc, characteristic of the gas or vapor through which the arc passes.
- arch support — a rigid support placed inside a shoe so that its molded form fits the arch of the foot and relieves strain on the muscles of the foot while walking, standing, etc.
- 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.
- archesporium — archespore.
- archosaurian — belonging to or characteristic of the archosaurs
- arenaviruses — Plural form of arenavirus.
- argillaceous — (of sedimentary rocks and deposits) composed of very fine-grained material, such as clay, shale, etc
- army surplus — used or unused articles of military clothing, equipment, etc previously allocated to or intended for the use of army personnel but now sold off to members of the public
- arousability — to stimulate sexually.
- arquebusiers — harquebusier.
- arseniferous — Lb geology Containing or producing arsenic.
- arseniureted — combined with arsenic
- arseno group — the bivalent group −As=As−.