12-letter words containing t, r, n
- 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
- affirmations — Plural form of affirmation.
- affrightment — the act of causing fear or alarm
- affrontingly — in an affronting manner
- aforestation — Alternative spelling of afforestation.
- african time — unpunctuality
- 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.
- 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
- agent orange — a highly poisonous herbicide used as a spray for defoliation and crop destruction, esp by US forces during the Vietnam War
- aggravations — Plural form of aggravation.
- aggregations — Plural form of aggregation.
- aggrievement — the state of being aggrieved
- aggrupations — Plural form of aggrupation.
- agranulocyte — a white blood cell without granules in its cytoplasm
- agroindustry — an activity combining agriculture and industry
- air ministry — (in England) the department of government administering all civil and military matters concerning aviation.
- air terminal — An air terminal is a building in which passengers wait before they get on to an aeroplane.
- aircraftsman — a person holding the rank of noncommissioned officer in the RAF.
- airtightness — the quality of being airtight
- alan shugart — Alan F. Shugart
- alant starch — inulin.
- albert canal — ship canal in Belgium, from Liège to Antwerp: 81 mi (131 km)
- alcaptonuria — Alternative spelling of alkaptonuria.
- alexandretta — Iskenderun
- alkaptonuria — excessive excretion of homogentisic acid in the urine, caused by a hereditary abnormality of the metabolism of tyrosine and phenylalanine.
- alliteration — Alliteration is the use in speech or writing of several words close together which all begin with the same letter or sound.
- altercations — Plural form of altercation.
- alternations — Plural form of alternation.
- alternatives — a choice limited to one of two or more possibilities, as of things, propositions, or courses of action, the selection of which precludes any other possibility: You have the alternative of riding or walking.
- alton towers — a 19th-century Gothic Revival mansion with extensive gardens in NW central England, in Staffordshire: site of a large amusement park
- ambartsumian — Viktor A(mazaspovich). 1908–96, Armenian astrophysicist, renowned for his description of radio sources as explosions in the core of galaxies
- amber nectar — beer
- ambisinister — clumsy or unskillful with both hands.
- ameliorating — Present participle of ameliorate.
- amelioration — the act or an instance of ameliorating or the state of being ameliorated
- amentiferous — bearing aments
- amethopterin — (now rare) Methotrexate.
- aminobutyric — (organic chemistry) Of or pertaining to any of several isomeric univalent radicals in which a hydrogen atom of a butyric radical is replaced by an amino group.
- among others — used to indicate that there are several more people like the one or ones mentioned, but that you do not intend to mention them all
- amortisation — Alternative spelling of amortization.
- amortization — the process of amortizing a debt
- amortizement — a sloping top on a buttress, pillar, etc.
- amphotericin — an amphoteric antibiotic produced by the bacterium Streptomyces nodosus and used in the treatment of fungal infections.
- amyl nitrite — a yellowish unstable volatile fragrant liquid used in medicine as a vasodilator and in perfumes. Formula: (CH3)2CHCH2CH2NO2
- an iron fist — a cruel and unyielding attitude or approach
- anacatharsis — severe vomiting