13-letter words containing achi
- achievability — The state or condition of being achievable.
- achill island — an island in the Republic of Ireland, off the W coast of Co Mayo. Area: 148 sq km (57 sq miles). Pop: 2620 (2002)
- achilles heel — Someone's Achilles heel is the weakest point in their character or nature, where it is easiest for other people to attack or criticize them.
- achilles jerk — a downward reflex action of the foot when the Achilles tendon is tapped, caused by contraction of the calf muscles.
- azurmalachite — a blue-green ornamental stone consisting of a mixture of azurite and malachite.
- brachiosaurus — a dinosaur of the genus Brachiosaurus, up to 30 metres long: the largest land animal ever known
- dieffenbachia — any of various plants belonging to the genus Dieffenbachia, of the arum family, native to tropical America, often cultivated as houseplants for their decorative foliage.
- free reaching — sailing on a free reach.
- fruit machine — gambling: slot machine
- green machine — A computer or peripheral device that has been designed and built to military specifications for field equipment (that is, to withstand mechanical shock, extremes of temperature and humidity, and so forth). Comes from the olive-drab "uniform" paint used for military equipment.
- machiavellian — of, like, or befitting Machiavelli.
- machiavellism — of, like, or befitting Machiavelli.
- machicolation — an opening in the floor between the corbels of a projecting gallery or parapet, as on a wall or in the vault of a passage, through which missiles, molten lead, etc., might be cast upon an enemy beneath.
- machilipatnam — a city in E Andhra Pradesh state, in S India, on the Bay of Bengal: first British trading settlement 1611.
- machinability — The condition of being machinable.
- machine cycle — (processor) The four steps which the CPU carries out for each machine language instruction: fetch, decode, execute, and store. These steps are performed by the control unit, and may be fixed in the logic of the CPU or may be programmed as microcode which is itself usually fixed (in ROM) but may be (partially) modifiable (stored in RAM). The fetch cycle places the current program counter contents (the address of the next instruction to execute) on the address bus and reads in the word at that location into the instruction register (IR). In RISC CPUs instructions are usually a single word but in other architectures an instruction may be several words long, necessitating several fetches. The decode cycle uses the contents of the IR to determine which gates should be opened between the CPU's various functional units and busses and what operation the ALU(s) should perform (e.g. add, bitwise and). Each gate allows data to flow from one unit to another (e.g. from register 0 to ALU input 1) or enables data from one output onto a certain bus. In the simplest case ("horizontal encoding") each bit of the instruction register controls a single gate or several bits may control the ALU operation. This is rarely used because it requires long instruction words (such an architecture is sometimes called a very long instruction word architecture). Commonly, groups of bits from the IR are fed through decoders to control higher level aspects of the CPU's operation, e.g. source and destination registers, addressing mode and ALU operation. This is known as vertical encoding. One way RISC processors gain their advantage in speed is by having simple instruction decoding which can be performed quickly. The execute cycle occurs when the decoding logic has settled and entails the passing of values between the various function units and busses and the operation of the ALU. A simple instruction will require only a single execute cycle whereas a complex instruction (e.g. subroutine call or one using memory indirect addressing) may require three or four. Instructions in a RISC typically (but not invariably) take only a single cycle. The store cycle is when the result of the instruction is written to its destination, either a register or a memory location. This is really part of the execute cycle because some instructions may write to multiple destinations as part of their execution.
- machine error — an error caused by a fault or defect in a machine rather than by human error
- machine screw — a threaded fastener, either used with a nut or driven into a tapped hole, usually having a diameter of about 1/4 inch (6.4 mm) or less and a slotted head for tightening by a screwdriver.
- machine-steel — low-carbon steel that can be easily machined.
- machinegunned — Simple past tense and past participle of machinegun.
- microteaching — a scaled-down teaching procedure with a few students under controlled conditions, often videotaped in order to analyze teaching techniques and develop new teaching skills.
- over-achiever — to perform, especially academically, above the potential indicated by tests of one's mental ability or aptitude.
- overachievers — Plural form of overachiever.
- overachieving — Present participle of overachieve.
- party machine — the internal organization of a political party, which decides its policies and directs its activities
- poker machine — a fruit machine
- stamp machine — a machine used for stamping documents, as with the time, etc
- superachiever — someone who achieves more than most; high achiever
- suprachiasmic — relating to the area in the hypothalamus that regulates the biological clock
- tachistoscope — an apparatus for use in exposing visual stimuli, as pictures, letters, or words, for an extremely brief period, used chiefly to assess visual perception or to increase reading speed.
- team teaching — a system whereby two or more teachers pool their skills, knowledge, etc, to teach combined classes
- underachiever — a student who performs less well in school than would be expected on the basis of abilities indicated by intelligence and aptitude tests, etc.
- unreproaching — not reproaching or blaming
- zone-leaching — A horizon.
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