12-letter words containing o, t, r
- aerification — an act of combining with air.
- aeroacoustic — Relating to aeroacoustics.
- aerodonetics — the study of soaring or gliding flight, esp the study of gliders
- aeroelastics — the study of aeroelastic phenomena.
- aeromagnetic — of magnetism in the atmosphere
- aeronautical — Aeronautical means involving or relating to the design and construction of aeroplanes.
- aeroplankton — the tiny plants, animals, and bacteria living and floating in the air
- aerosiderite — a meteorite which is composed mainly of iron
- aethrioscope — an instrument which measures temperature changes caused by different conditions of the sky
- affirmations — Plural form of affirmation.
- afforestable — having the capacity to be turned into forest
- affrontingly — in an affronting manner
- aforestation — Alternative spelling of afforestation.
- aforethought — premeditated (esp in the phrase malice aforethought)
- 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-school — After-school activities are those that are organized for children in the afternoon or evening after they have finished school.
- 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.
- 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.
- aggravations — Plural form of aggravation.
- aggregations — Plural form of aggregation.
- aggrupations — Plural form of aggrupation.
- agranulocyte — a white blood cell without granules in its cytoplasm
- agriproducts — Plural form of agriproduct.
- agroforester — a person who carries out agroforestry
- agroforestry — a method of farming integrating herbaceous and tree crops
- agroindustry — an activity combining agriculture and industry
- airbrush out — to remove evidence of (someone or something from photographs, books, or history)
- airport code — a three-letter abbreviation of the names of the world's major airports, used especially as an identifier for routing baggage.
- alcaptonuria — Alternative spelling of alkaptonuria.
- algesiometer — an instrument for determining the sensitiveness of the skin to a painful stimulus.
- alkaptonuria — excessive excretion of homogentisic acid in the urine, caused by a hereditary abnormality of the metabolism of tyrosine and phenylalanine.
- all the more — All is used in structures such as all the more or all the better to mean even more or even better than before.
- all together — in chorus, in unison
- allegoristic — writing or using allegory; interpreting in an allegorical sense.
- alliteration — Alliteration is the use in speech or writing of several words close together which all begin with the same letter or sound.
- allotropical — (chemistry, rare) Of or pertaining to an element that exhibits allotropy.
- alstroemeria — any plant of the tuberous perennial liliaceous genus Alstroemeria, originally S American, grown for their brightly coloured orchid-like flowers
- altercations — Plural form of altercation.
- alternations — Plural form of alternation.
- alto-relievo — high relief
- alto-rilievo — alto-relievo
- alto-stratus — a cloud of a class characterized by a generally uniform gray sheet or layer, lighter in color than nimbostratus and darker than cirrostratus: of medium altitude, about 8000–20,000 feet (2450–6100 meters).
- alton towers — a 19th-century Gothic Revival mansion with extensive gardens in NW central England, in Staffordshire: site of a large amusement park
- ambidextrous — Someone who is ambidextrous can use both their right hand and their left hand equally skilfully.