12-letter words containing a, e, s, t
- 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
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea
- apostrophise — to address by apostrophe.
- apostrophize — to address an apostrophe to
- apothecaries — Plural form of apothecary.
- apotheosized — Simple past tense and past participle of apotheosize.
- apparentness — The state or quality of being apparent.
- appellations — Plural form of appellation.
- appellatives — Plural form of appellative.
- appendicitis — Appendicitis is an illness in which a person's appendix is infected and painful.
- appetisement — appetite or hunger
- appetisingly — Alternative spelling of appetizingly.
- applied arts — arts that are put to practical use
- appointments — Plural form of appointment.
- appositeness — The state of being apposite.
- appraisement — the act of estimating or judging the nature or value of something or someone.
- appreciators — to be grateful or thankful for: They appreciated his thoughtfulness.
- apprentisage — Obsolete form of apprenticeage.
- appropriates — suitable or fitting for a particular purpose, person, occasion, etc.: an appropriate example; an appropriate dress.
- approximates — near or approaching a certain state, condition, goal, or standard.
- aquaintances — Plural form of aquaintance.
- araeosystyle — (of columned buildings) having an alternately very wide and very narrow intercolumniation
- arbitrageurs — Plural form of arbitrageur.
- arc cosecant — the angle, measured in radians, that has a cosecant equal to a given number. Symbol: csc −1. Abbreviation: arc csc;
- arc spectrum — a spectrum formed from the light produced by an electric arc, characteristic of the gas or vapor through which the arc passes.
- 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.
- archenterons — Plural form of archenteron.
- archeologist — archaeology.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- 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.
- arfvedsonite — a type of hornblende with the composition Na3(Fe,Mg)4FeSi8O22(OH)2
- 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
- aristotelian — of or relating to Aristotle or his philosophy
- 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.
- arraignments — Plural form of arraignment.
- arrangements — preparatory measures taken or plans made; preparations
- arseniureted — combined with arsenic
- arsenopyrite — a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsS
- artaxerxes i — died 425 bc, king of Persia (465–425): son of Xerxes I
- arteriograms — Plural form of arteriogram.
- 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.
- artillerists — Plural form of artillerist.
- arts student — a person studying an arts subject
- 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.