16-letter words containing a, e, c, h
- (at) second hand — not from the original source; indirectly
- absolute alcohol — a liquid containing at least 99 per cent of pure ethanol by weight
- absolute monarch — a monarchy that is not limited or restrained by laws or a constitution.
- abstract machine — 1. (language) A processor design which is not intended to be implemented as hardware, but which is the notional executor of a particular intermediate language (abstract machine language) used in a compiler or interpreter. An abstract machine has an instruction set, a register set and a model of memory. It may provide instructions which are closer to the language being compiled than any physical computer or it may be used to make the language implementation easier to port to other platforms. A virtual machine is an abstract machine for which an interpreter exists. Examples: ABC, Abstract Machine Notation, ALF, CAML, F-code, FP/M, Hermes, LOWL, Christmas, SDL, S-K reduction machine, SECD, Tbl, Tcode, TL0, WAM. 2. (theory) A procedure for executing a set of instructions in some formal language, possibly also taking in input data and producing output. Such abstract machines are not intended to be constructed as hardware but are used in thought experiments about computability. Examples: Finite State Machine, Turing Machine.
- acanthocephalans — Plural form of acanthocephalan.
- acanthopterygian — of, relating to, or belonging to the Acanthopterygii, a large group of teleost fishes having spiny fin rays. The group includes most saltwater bony fishes
- accidental death — death that was caused unintentionally
- acetic anhydride — a colourless pungent liquid used in the manufacture of cellulose and vinyl acetates for synthetic fabrics. Formula: (CH3CO)2O
- achievement test — a test designed to measure the effects that learning and teaching have on individuals
- acid house party — a professionally organized party for young people, with Acid House music, sometimes held in a field or disused building
- acorn archimedes — Archimedes
- acquaintanceship — a person known to one, but usually not a close friend.
- acroparaesthesia — a persistent sensation of numbness and tingling in the hands and feet
- across the board — If a policy or a situation applies across the board, it affects everything or everyone in a particular group.
- across-the-board — applying to all employees, members, groups, or categories; general: The across-the-board pay increase means a raise for all employees.
- add to the check — If you add an item or expense to the check at a restaurant or hotel, you put an extra charge onto a customer's bill to charge for an additional service they have used.
- adiadochokinesia — the inability to perform rapidly alternating muscular movements, as flexion and extension.
- adiadochokinesis — the inability to perform rapidly alternating muscular movements, as flexion and extension.
- adjective phrase — An adjective phrase or adjectival phrase is a group of words based on an adjective, such as 'very nice' or 'interested in football.' An adjective phrase can also consist simply of an adjective.
- adjustable-pitch — (of a marine or aircraft propeller) having blades whose pitch can be changed while the propeller is stationary, chiefly to suit various conditions of navigation or flight.
- advisory teacher — a teacher who visits schools to advise teachers on curriculum developments within a particular subject area
- aerotherapeutics — the treatment of disease by the use of air, esp. by exposing patients to changes in atmospheric pressure
- aesthetic labour — workers employed by a company for their appearance or accent, with the aim of promoting the company's image
- aestheticisation — Act or process of aestheticising.
- aestheticization — Alternative form of aestheticisation.
- african elephant — a type of elephant that is native to Africa
- african honeybee — killer bee.
- air vice-marshal — a senior Royal Air Force officer of equivalent rank to a rear admiral in the Royal Navy
- 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)
- alligator wrench — a wrench having a V -shaped pair of serrated jaws set at right angles to the shank for turning cylindrical or irregularly shaped parts.
- alpha conversion — (theory) In lambda-calculus and reduction, the renaming of a formal parameter in a lambda abstraction. This does not change the meaning of the abstraction. For example: \ x . x+1 <--> \ y . y+1 If the actual argument to a lambda abstraction contains instances of the abstraction's formal parameter then it is necessary to rename the parameter before applying the abstraction to avoid name capture.
- alpha-adrenergic — of or having to do with an alpha receptor
- alpha-tocopherol — Alpha-tocopherol is a form of vitamin E.
- alphanumerically — In an alphanumeric manner; using alphanumeric characters.
- 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.
- ambulance chaser — a lawyer who seeks to encourage and profit from the lawsuits of accident victims
- american english — the form of English spoken in the US
- american spanish — Spanish as used in Latin America. Abbreviation: AmerSp.
- aminocyclohexane — cyclohexylamine.
- amne machin shan — a mountain range in W central China. Highest peak, Amne Machin, 23, 490 feet (7164 meters).
- ancestor worship — (in certain societies) the veneration of ancestors whose spirits are frequently held to possess the power to influence the affairs of the living.
- aniakchak crater — an active volcanic crater on the Alaskan Peninsula, with a diameter of 6 miles (10 km).
- anthropocentrism — an anthropocentric theory or view.
- anthropometrical — Pertaining to anthropometry.
- anthroposemiotic — Of or pertaining to anthroposemiotics.
- anti-theoretical — of, relating to, or consisting in theory; not practical (distinguished from applied).
- anticholinergics — Plural form of anticholinergic.
- antipathetically — In an antipathetic fashion.
- apple-touch-icon — (programming) (apple-touch-icon.png) Apple's default icon (image) used to represent a website, e.g. when saved as a bookmark or on the home screen of an iOS device such as an iPhone or iPad. Apple's scheme allows a site to offer images of different sizes so the client can choose the most appropriate one according to its screen size and resolution. Apple devices and applications completely ignore the favicon.ico de facto standard which, while somewhat quirky in its use of the ico format, has been pretty much universally adopted elsewhere. Conversely, apple-touch-icon.png will be ignored by non-Apple devices, possibly because its 16x16 resolution would look pretty shabby on most smart phones.
- applied research — research that is put to practical use
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