12-letter words containing r, a
- aerial input — a socket for an aerial
- 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
- aeroplankton — the tiny plants, animals, and bacteria living and floating in the air
- aerosiderite — a meteorite which is composed mainly of iron
- aerosol bomb — a metal receptacle, containing an inert gas under pressure, that sprays an insecticide, disinfectant, or the like when the gas is released by opening a valve.
- 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.
- afforestable — having the capacity to be turned into forest
- 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.
- aforethought — premeditated (esp in the phrase malice aforethought)
- 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 a sort — to some extent
- after-dinner — immediately following dinner: an after-dinner speech.
- after-effect — The after-effects of an event, experience, or substance are the conditions which result from it.
- after-school — After-school activities are those that are organized for children in the afternoon or evening after they have finished school.
- afterburners — Plural form of afterburner.
- afterburning — a process in which additional fuel is ignited in the exhaust gases of a jet engine to produce additional thrust
- aftereffects — Plural form of aftereffect.
- afterthought — If you do or say something as an afterthought, you do or say it after something else as an addition, perhaps without careful thought.
- agaricaceous — belonging to the Agaricaceae, a family of fungi including mushrooms having blade-shaped gills on the underside of the cap.
- agency nurse — a nurse employed by an agency, rather than by a hospital
- agent orange — a highly poisonous herbicide used as a spray for defoliation and crop destruction, esp by US forces during the Vietnam War
- agglomerated — gathered together into a cluster or mass.
- agglomerates — Third-person singular simple present indicative form of agglomerate.
- agglomerator — gathered together into a cluster or mass.