12-letter words containing a, r, l
- 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.
- alphamerical — relating to alphanumeric characters
- alphanumeric — (of a character set, code, or file of data) consisting of alphabetical and numerical symbols
- alphaviruses — Plural form of alphavirus.
- 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
- alyce clover — a tropical perennial clover (Alysicarpus vaginalis) sometimes used as a cover crop and for fodder
- amateurishly — In an amateurish or nonprofessional manner.
- 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
- american elk — elk (def 2).
- american elm — an elm, Ulmus americana, of North America, cultivated for shade and ornament: state tree of Massachusetts, Nebraska, and North Dakota.
- ampelography — the science concerned with the identification and classification of grapevines
- ampere's law — the law that a magnetic field induced by an electric current is, at any point, directly proportional to the product of the current intensity and the length of the current conductor, inversely proportional to the square of the distance between the point and the conductor, and perpendicular to the plane joining the point and the conductor.
- amphiregulin — (protein) A particular autocrine growth factor.
- amygdaliform — almond-shaped.
- amyl nitrite — a yellowish unstable volatile fragrant liquid used in medicine as a vasodilator and in perfumes. Formula: (CH3)2CHCH2CH2NO2
- anachronical — Not in the correct date order. Chronologically incorrect.
- anarchically — In an anarchic manner; in the manner of anarchy.
- anchor light — a 32-point light, visible from at least two miles away, shown at night near the bow and not more than 20 feet (6 meters) above the deck of a vessel lying at anchor.
- anchor plant — a South American shrub, Colletia cruciata, of the buckthorn family, having flattened green branches and yellowish-white flowers.
- anchoritical — in the manner of or resembling an anchorite
- andragogical — the methods or techniques used to teach adults: Many educators believe that the principles of andragogy, as advanced by Malcolm Knowles, have great relevance to adult education; others are not so certain.
- andre fleury — André Hercule de [ahn-drey er-kyl duh] /ɑ̃ˈdreɪ ɛrˈkül də/ (Show IPA), 1653–1743, French cardinal and statesman.
- androclinium — clinandrium.
- angel's hair — Also called capelli d’angelo. Italian Cookery. a type of very thin pasta.
- angelo patri — Angelo [an-juh-loh] /ˈæn dʒəˌloʊ/ (Show IPA), 1877–1965, U.S. educator and writer, born in Italy.
- anglo-french — of or relating to England and France
- anglo-norman — relating to the Norman conquerors of England, their society, or their language
- anguilliform — having the shape or form of an eel
- angularities — Plural form of angularity.
- animal lover — a person who feels fondness for animals
- anisothermal — (thermodynamics) Of or pertaining to a system that is not in thermal equilibrium, that does not have a single fixed temperature.
- anklewarmers — Plural form of anklewarmer.
- ankylosaurus — a plant-eating dinosaur of the Cretaceous period that had a tail resembling a club and a body covering of thick scales