12-letter words containing r, a, t
- airfreighted — Simple past tense and past participle of airfreight.
- airport code — a three-letter abbreviation of the names of the world's major airports, used especially as an identifier for routing baggage.
- airtightness — the quality of being airtight
- alan shugart — Alan F. Shugart
- alant starch — inulin.
- alarm system — a set of electronic devices that trigger an alarm
- albert canal — ship canal in Belgium, from Liège to Antwerp: 81 mi (131 km)
- albert speer — Albert [al-bert;; German ahl-bert] /ˈæl bərt;; German ˈɑl bɛrt/ (Show IPA), 1905–81, German Nazi leader: appointed by Hitler as official Nazi architect.
- alberti bass — a reiterated broken-chord figure used as an accompaniment, especially in 18th-century rococo keyboard music.
- alcaptonuria — Alternative spelling of alkaptonuria.
- alexandretta — Iskenderun
- algesiometer — an instrument for determining the sensitiveness of the skin to a painful stimulus.
- alkalimeters — Plural form of alkalimeter.
- 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 the rage — angry fury; violent anger (sometimes used in combination): a speech full of rage; incidents of road rage.
- 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.
- alliterative — Alliterative means relating to or connected with alliteration.
- allotropical — (chemistry, rare) Of or pertaining to an element that exhibits allotropy.
- alpha rhythm — the normal bursts of electrical activity from the cerebral cortex of a drowsy or inactive person, occurring at a frequency of 8 to 12 hertz and detectable with an electroencephalograph
- alphabetiser — Non-Oxford British standard spelling of alphabetizer.
- alphabetizer — to put or arrange in alphabetical order.
- alstroemeria — any plant of the tuberous perennial liliaceous genus Alstroemeria, originally S American, grown for their brightly coloured orchid-like flowers
- altar server — server (def 5).
- alterability — capable of being altered.
- 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.
- 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
- amateurishly — In an amateurish or nonprofessional manner.
- 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
- ambidextrous — Someone who is ambidextrous can use both their right hand and their left hand equally skilfully.
- ambisextrous — Informal. sexually attracted to both sexes; bisexual. used by or suitable for either sex; unisex: ambisextrous hair styles.
- ambisinister — clumsy or unskillful with both hands.
- ambrettolide — a colorless liquid, C 16 H 28 O 2 , having a strong musky odor, used as a fixative in the manufacture of perfume.
- ambulatories — Plural form of ambulatory.
- ambulatorily — By or in terms of walking.
- ameliorating — Present participle of ameliorate.
- amelioration — the act or an instance of ameliorating or the state of being ameliorated
- ameliorative — Able to repair or ameliorate.
- amelioratory — tending to ameliorate
- 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.