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17-letter words containing a, n, t

  • activation record — (compiler)   (Or "data frame", "stack frame") A data structure containing the variables belonging to one particular scope (e.g. a procedure body), as well as links to other activation records. Activation records are usually created (on the stack) on entry to a block and destroyed on exit. If a procedure or function may be returned as a result, stored in a variable and used in an outer scope then its activation record must be stored in a heap so that its variables still exist when it is used. Variables in the current scope are accessed via the frame pointer which points to the current activation record. Variables in an outer scope are accessed by following chains of links between activation records. There are two kinds of link - the static link and the dynamic link.
  • active euthanasia — the deliberate act of killing someone painlessly, esp to relieve suffering from an incurable illness
  • active ingredient — the part of a substance or compound that produces its chemical or biological effect
  • active language i — (tool, mathematics)   An early interactive mathematics system for the XDS 930 at the University of California at Berkeley.
  • active suspension — a type of suspension in a car that is controlled by an onboard computer and improves the vehicle's roadholding so that it takes corners, accelerates, and brakes more smoothly
  • actuarial science — Actuarial science is a specialist branch of mathematics applying the laws of statistics and probability to insurance.
  • acupressure point — any of the specific points on the body where pressure is applied in acupressure
  • adaptive learning — (algorithm)   (Or "Hebbian learning") Learning where a system programs itself by adjusting weights or strengths until it produces the desired output.
  • addition compound — adduct (def 2).
  • addition reaction — a reaction in which part of a compound is added to one end of a double or triple bond, while the rest adds to the other end, converting it, respectively, to a single or double bond.
  • additive identity — an element that when added to a given element in a specified set leaves that element unchanged, as zero in the real-number system.
  • adenylate cyclase — an enzyme that catalyzes the conversion of ATP to cyclic AMP.
  • adjective pronoun — a pronoun used as an adjective, as his in His dinner is ready.
  • adjunct professor — a professor employed by a college or university for a specific purpose or length of time and often part-time.
  • administratorship — a person who manages or has a talent for managing.
  • admiralty islands — a group of about 40 volcanic and coral islands in the SW Pacific, part of Papua New Guinea, in the Bismarck Archipelago: main island: Manus. Pop (whole province): 43 589 (2000). Area: about 2000 sq km (800 sq miles)
  • adoptive immunity — passive immunity resulting from the administration of sensitized lymphocytes from an immune donor.
  • advance directive — a living will or durable power of attorney in which a person states his or her wishes regarding medical treatment in the event of mental incompetency or an inability to communicate.
  • advanced standing — the status of a student who has already completed some of the requirements of a course at another institution and thus is able to miss out some elements of the full course at his or her current university
  • adventure holiday — a holiday that involves some physically challenging activity such as canoeing, rock climbing, etc
  • adventure tourism — tourism involving activities that are physically challenging
  • adventuresomeness — The state or quality of being adventuresome.
  • adverse selection — Adverse selection is a term used to describe the tendency of those in dangerous jobs or with high-risk lifestyles to want to take out life insurance.
  • aerobic digestion — Aerobic digestion is a process which uses bacteria and oxygen to break down organic and biological waste.
  • aerothermodynamic — Of or pertaining to aerothermodynamics.
  • affiliation order — (formerly) an order made by a magistrates' court that a man adjudged to be the father of an illegitimate child shall contribute a specified periodic sum towards the child's maintenance
  • afternoon session — a part of an event taking place in the afternoon
  • aftershave lotion — a lotion, usually styptic and perfumed, for application to the face after shaving
  • against sb's will — If something is done against your will, it is done even though you do not want it to be done.
  • against the clock — If you are doing something against the clock, you are doing it in a great hurry, because there is very little time.
  • against the grain — contrary to one's feelings, nature, wishes, etc.; irritating or displeasing
  • age of discretion — the age at which a person is considered to be able to manage his or her own affairs
  • agenbite of inwit — remorse of conscience
  • agent provocateur — An agent provocateur is a person who is employed by the government or the police to encourage certain groups of people to break the law, so they can arrest them or make them lose public support.
  • agreement to sell — a contract between two parties in which one party agrees to sell something to the other
  • ahnfelt's seaweed — a red alga, Ahnfeltia plicata, common along the coasts of North America and Europe, having brownish, bushlike branches.
  • air-transportable — that can be transported by aircraft: air-transportable equipment.
  • all the trimmings — If you say that something comes with all the trimmings, you mean that it has many extra things added to it to make it more special.
  • allende meteorite — a carbonaceous chondrite meteorite that fell over northern Mexico in 1969: one of the largest recorded falls of a stony meteorite.
  • allergic rhinitis — a condition characterized by head congestion, sneezing, tearing, and swelling of the nasal mucous membranes, caused by an allergic reaction.
  • alligator snapper — a large, freshwater snapping turtle (Macroclemys temmincki) of the SE U.S. and the Mississippi Valley, found chiefly in rivers and bayous: it may weigh up to 100 kg (220 lb)
  • almanach de gotha — a publication giving statistical information on European royalty.
  • alpha-fetoprotein — a protein that forms in the liver of the human fetus. Excessive quantities in the amniotic fluid and maternal blood may indicate spina bifida in the fetus; low levels may point to Down's syndrome
  • altamonte springs — a city in central Florida.
  • alternate plumage — (of birds having more than one plumage in their cycle of molts) the plumage of the second molt, usually brighter than the basic plumage.
  • alternating group — the subgroup consisting of all even permutations, of the group of all permutations of a finite set.
  • alternating light — a beacon showing different colors in succession.
  • alternative music — independent pop music
  • altitude sickness — a condition affecting some persons at high altitudes, caused by insufficient oxygen in the blood and characterized by dizziness, nausea, and shortness of breath.
  • altitude training — training performed at high altitude to prepare an athlete's body to cope with a reduced supply of oxygen
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