12-letter words containing r, i, n, s
- antiroyalist — opposed to the monarchy
- antirrhinums — Plural form of antirrhinum.
- antispinward — (often science fiction) In a rotating reference frame, against the direction of spin.
- antistrophes — Plural form of antistrophe.
- antistrophic — Of or pertaining to an antistrophe.
- antistrophon — an argument that is retorted against an opponent
- antisway bar — stabilizer bar.
- antisymmetry — the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts.
- anton sailer — Anton [ahn-tohn] /ˈɑn toʊn/ (Show IPA), ("Toni") 1935–2009, Austrian skier.
- appraisement — the act of estimating or judging the nature or value of something or someone.
- appraisingly — to estimate the monetary value of; determine the worth of; assess: We had an expert appraise the house before we bought it.
- apprehension — Apprehension is a feeling of fear that something bad may happen.
- apprehensive — Someone who is apprehensive is afraid that something bad may happen.
- apprentisage — Obsolete form of apprenticeage.
- approbations — approval; commendation.
- apron string — a string for tying an apron on
- 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)
- arbitrations — Plural form of arbitration.
- archdiocesan — Relating to an archdiocese.
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- archosaurian — belonging to or characteristic of the archosaurs
- arenaviruses — Plural form of arenavirus.
- arfvedsonite — a type of hornblende with the composition Na3(Fe,Mg)4FeSi8O22(OH)2
- 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.
- aristotelian — of or relating to Aristotle or his philosophy
- arm-twisting — persuasion
- arming chest — a chest for holding armor and weapons.
- arraignments — Plural form of arraignment.
- arsenic acid — a white poisonous soluble crystalline solid used in the manufacture of arsenates and insecticides. Formula: H3AsO4
- arseniferous — Lb geology Containing or producing arsenic.
- 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
- arsino group — the univalent group H 2 As−.
- arsphenamine — a drug containing arsenic, formerly used in the treatment of syphilis and related infections
- arts council — an organization that provides funding for a variety of arts activities
- ascertaining — to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
- ashurbanipal — died ?626 bc, king of Assyria (?668–?626): son of Esarhaddon. He built the magnificent palace and library at Nineveh
- asking price — The asking price of something is the price which the person selling it says that they want for it, although they may accept less.
- asparaginase — an enzyme used in treating leukaemia
- aspirational — If you describe someone as aspirational, you mean that they have strong hopes of moving to a higher social status.
- aspiringness — the condition of being aspiring
- assassinator — a person who assassinates
- assertations — Plural form of assertation.
- asseverating — Present participle of asseverate.
- asseveration — the act of asseverating.
- assurbanipal — Ashurbanipal
- astringently — In the manner of an astringent.
- astrodynamic — Pertaining to astrodynamics.