12-letter words containing i, s, o, e
- antistrophes — Plural form of antistrophe.
- anton sailer — Anton [ahn-tohn] /ˈɑn toʊn/ (Show IPA), ("Toni") 1935–2009, Austrian skier.
- anxious seat — a bench near the preacher at revival meetings, for those with a troubled conscience who seek salvation
- 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.
- appellations — Plural form of appellation.
- apple-polish — to curry favor with someone, especially in an obsequious or flattering manner.
- appointments — Plural form of appointment.
- appositeness — The state of being apposite.
- appreciators — to be grateful or thankful for: They appreciated his thoughtfulness.
- apprehension — Apprehension is a feeling of fear that something bad may happen.
- appressorium — a flattened hypha of a parasitic fungus that penetrates the host tissues
- 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.
- archdiocesan — Relating to an archdiocese.
- archdioceses — Plural form of archdiocese.
- archeologist — archaeology.
- archesporial — the primitive cell, or group of cells, that give rise to the cells from which spores are derived.
- archesporium — archespore.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- archipelagos — Plural form of archipelago.
- arfvedsonite — a type of hornblende with the composition Na3(Fe,Mg)4FeSi8O22(OH)2
- argillaceous — (of sedimentary rocks and deposits) composed of very fine-grained material, such as clay, shale, etc
- 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
- aristotelian — of or relating to Aristotle or his philosophy
- arseniferous — Lb geology Containing or producing 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
- arteriograms — Plural form of arteriogram.
- arthrotomies — Plural form of arthrotomy.
- ascensionist — a person who has completed a mountain ascent, esp a notable one
- aspect ratio — the ratio of width to height of the picture on a television or cinema screen
- assay office — an organization that assays and monitors the purity of precious metals in a particular country
- assertations — Plural form of assertation.
- assessorship — the occupation, post or duties of a person who assesses, advises, or estimates
- asseveration — the act of asseverating.
- assuefaction — the condition of being or becoming familiar with or used to something
- astigmometer — an apparatus for measuring the degree of astigmatism.
- astigmoscope — astigmatoscope.
- astonishable — (obsolete) Astonishing.
- astonishment — Astonishment is a feeling of great surprise.
- astrochemist — (chemistry, astronomy) A chemist or astronomer whose speciality is astrochemistry.
- asynchronies — a lack of synchronism or coincidence in time.
- atactostelic — Of or possessing an atactostele.
- 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.
- attorneyship — The office or profession of an attorney.