16-letter words containing a, t, d
- aeolian deposits — sediments, such as loess, made up of windblown grains of sand or dust
- against all odds — If something happens against all odds, it happens or succeeds although it seemed impossible or very unlikely.
- against the head — from the opposing side's put-in to the scrum
- aggregate demand — the total demand for goods and services in an economy at a specified price level and in a specified time period
- agustin iturbide — Agustín de [ah-goos-teen de] /ˌɑ gusˈtin dɛ/ (Show IPA), 1783–1824, Mexican soldier and revolutionary: as Agustín I, emperor of Mexico 1822–23.
- air conditioning — Air conditioning is a method of providing buildings and vehicles with cool dry air.
- air-raid shelter — a structure, often located underground, that is designed to protect people during an air raid
- alder flycatcher — a North American flycatcher, Empidonax alnorum, of alder thickets and other moist areas, that has greenish-brown upper parts and whitish underparts and is almost indistinguishable except by voice from E. traillii (willow flycatcher)
- aleutian islands — a chain of over 150 volcanic islands, extending southwestwards from the Alaska Peninsula between the N Pacific and the Bering Sea
- alfred the great — 849–99, king of Wessex (871–99) and overlord of England, who defeated the Danes and encouraged learning and writing in English
- all in good time — in due course
- alligator lizard — any of several lizards of the genera Algaria and Gerrhonotus, of western North America, having shinglelike scales and a fold along each side that permits expansion.
- alloyed junction — a semiconductor junction used in some junction transistors and formed by alloying metal contacts, functioning as emitter and collector regions, to a wafer of semiconductor that acts as the base region
- altitude chamber — a chamber for simulating the conditions of air pressure and temperature for a given altitude in order to test the behavior of people and equipment in such an environment.
- ambidextrousness — The state or quality of being ambidextrous.
- amebic dysentery — a form of dysentery caused by an amoeba (Entamoeba histolytica)
- american mustard — a mild yellow mustard
- american tragedy — a novel (1925) by Theodore Dreiser.
- aminoacetic acid — glycine.
- aminocitric acid — an amino acid, C 6 H 9 O 7 N, that is a component of calf thymus ribonucleoprotein.
- ammunition depot — a place where ammunition is stored
- amusement arcade — An amusement arcade is a place where you can play games on machines which work when you put money in them.
- an end in itself — If you consider something to be an end in itself, you do it because it seems desirable and not because it is likely to lead to something else.
- anabolic steroid — Anabolic steroids are drugs which people, especially athletes, take to make their muscles bigger and to give them more strength.
- anderson shelter — a small prefabricated air-raid shelter of World War II consisting of an arch of corrugated metal and designed to be partly buried in people's gardens and covered with earth for protection
- andrea del sarto — Andrea [ahn-drey-uh;; Italian ahn-dre-ah] /ɑnˈdreɪ ə;; Italian ɑnˈdrɛ ɑ/ (Show IPA), Andrea del Sarto.
- andrew tanenbaum — (person) Professor Andrew S. Tanenbaum (1941-) of the Vrije Universiteit, Amsterdam in The Netherlands. Tanenbaum is famous for his work and books on computer architecture, operating systems and networks. He wrote the textbook "Computer Networks", Second Edition, Prentice-Hall, 1981, which describes the International Standards Organisation, Open Systems Interconnection (ISO-OSI) network model. See Amoeba, Mac-1, Mic-1, Mic-2, Micro Assembly Language, MINIX, MicroProgramming Language, standard.
- andromeda strain — a hypothetical microorganism, as might be developed from biological research, that if released would uncontrollably kill living things on earth
- angular diameter — the angle that the apparent diameter of a celestial object subtends at the eye of the observer.
- animated cartoon — a film produced by photographing a series of gradually changing drawings, etc, which give the illusion of movement when the series is projected rapidly
- anode resistance — (of a vacuum tube at a given level of output) the ratio of a small change in voltage of the anode to the corresponding small change in anode current.
- anthony of padua — Saint. 1195–1231, Franciscan friar, who preached in France and Italy. Feast day: June 13
- anthranilic acid — an aromatic acid, C6H4
- anti-aphrodisiac — Also, aphrodisiacal [af-ruh-duh-zahy-uh-kuh l, -sahy-] /ˌæf rə dəˈzaɪ ə kəl, -ˈsaɪ-/ (Show IPA). arousing sexual desire.
- anti-development — the act or process of developing; growth; progress: child development; economic development.
- anti-federalists — U.S. History. a member or supporter of the Antifederal party.
- antianxiety drug — any of various substances, as benzodiazepines, that are primarily used to treat various forms of anxiety and psychosomatic conditions.
- antimony sulfide — antimony pentasulfide.
- antiphospholipid — (medicine) Counteracting phospholipids; applied to Hughes syndrome.
- anxiety disorder — any of various mental disorders characterized by extreme anxiety and including panic disorder, post-traumatic stress disorder, and generalized anxiety disorder
- appraisal method — a method used for the appraisal of an employee
- arctic red river — a river in the W Northwest Territories, Canada, flowing NW to the Mackenzie River. 310 miles (500 km) long.
- armed neutrality — military preparedness without commitment, especially as the expressed policy of a neutral nation in wartime; readiness to counter with force an invasion of rights by any belligerent power.
- arms and the man — a comedy (1898) by G. B. Shaw.
- around the clock — continuing without pause or interruption: an around-the-clock guard on the prisoner.
- around the world — in many countries
- around-the-clock — all day and all night
- arsenic trioxide — a white poisonous powder used in the manufacture of glass and as an insecticide, rat poison, and weedkiller. Formula: As2O3
- artificial blood — a chemical emulsion, capable of carrying oxygen and carbon dioxide, for temporary use as a blood substitute in medical emergencies or when a patient objects to blood transfusions on religious grounds.
- as distinct from — If you say that you are talking about one thing as distinct from another, you are indicating exactly which thing you mean.