12-letter words containing r, i
- aerification — an act of combining with air.
- aeroacoustic — Relating to aeroacoustics.
- aerodonetics — the study of soaring or gliding flight, esp the study of gliders
- aerodynamics — Aerodynamics is the study of the way in which objects move through the air.
- aeroelastics — the study of aeroelastic phenomena.
- aeroembolism — an embolism of air bubbles often caused by surgery, induced abortion, or decompression sickness
- aeromagnetic — of magnetism in the atmosphere
- aeromechanic — an aircraft mechanic
- aeromedicine — the medical treatment of disorders associated with air or space travel
- aeronautical — Aeronautical means involving or relating to the design and construction of aeroplanes.
- aeroneurosis — a functional disorder of aeroplane pilots characterized by anxiety and various psychosomatic disturbances, caused by insufficient oxygen at high altitudes and the emotional tension of flying
- aerosiderite — a meteorite which is composed mainly of iron
- aethelred ii — ("Ethelred the Unready") a.d. 968?–1016, king of England 978–1013, 1014–1016.
- aethrioscope — an instrument which measures temperature changes caused by different conditions of the sky
- affine group — the group of all affine transformations of a finite-dimensional vector space.
- affirmations — Plural form of affirmation.
- affirmatives — Plural form of affirmative.
- affranchised — Simple past tense and past participle of affranchise.
- affrightedly — in a frightened or alarmed manner
- affrightment — the act of causing fear or alarm
- affrontingly — in an affronting manner
- aforestation — Alternative spelling of afforestation.
- african gray — an ashy-gray, African parrot, Psittacus erithacus, having a short, red tail, noted especially for its ability to mimic speech.
- african lily — an African plant (Agapanthus africanus) of the lily family with blue or white, funnel-shaped flowers
- african time — unpunctuality
- africanness' — Also, Africa. of or from Africa; belonging to the black peoples of Africa.
- afrikanerdom — (in South Africa) Afrikaner nationalism based on pride in the Afrikaans language and culture, conservative Calvinism, and a sense of heritage as pioneers
- afrikanerism — a word, term, or usage peculiar to or originating among Afrikaners.
- afro-asiatic — a family of languages of SW Asia and N Africa, consisting of the Semitic, ancient Egyptian, Berber, Cushitic, and Chadic subfamilies
- afro-british — of or relating to British people of African descent
- afrocentrism — centered on Africa or on African-derived cultures, as those of Brazil, Cuba, and Haiti: Afrocentric art.
- after-dinner — immediately following dinner: an after-dinner speech.
- afterburning — a process in which additional fuel is ignited in the exhaust gases of a jet engine to produce additional thrust
- agaricaceous — belonging to the Agaricaceae, a family of fungi including mushrooms having blade-shaped gills on the underside of the cap.
- aggrandising — Present participle of aggrandise.
- aggrandizing — Present participle of aggrandize.
- aggravations — Plural form of aggravation.
- aggregations — Plural form of aggregation.
- aggressively — characterized by or tending toward unprovoked offensives, attacks, invasions, or the like; militantly forward or menacing: aggressive acts against a neighboring country.
- aggressivity — the state or quality of being aggressive
- aggrievement — the state of being aggrieved
- aggrupations — Plural form of aggrupation.
- agp graphics — Accelerated Graphics Port
- agrammatical — not obeying the rules of grammar
- agreeability — an agreeable disposition
- agribusiness — Agribusiness is the various businesses that produce, sell, and distribute farm products, especially on a large scale.
- agrichemical — a chemical used in agriculture
- agricultural — Agricultural means involving or relating to agriculture.
- agrippina ii — a.d. 16?–59? mother of the Roman emperor Nero and sister of Caligula.
- agriproducts — Plural form of agriproduct.