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13-letter words containing a, n, c, h, y

  • 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.
  • macrencephaly — The presence of an abnormally large brain.
  • mango chutney — chutney which contains or is made from the fruit mango
  • merchant navy — commercial ships
  • metaphysician — a person who creates or develops metaphysical theories.
  • michigan city — a port in NW Indiana, on Lake Michigan.
  • monarchically — In a monarchic or monarchical fashion.
  • money-changer — a person whose business is the exchange of currency, usually of different countries, at a fixed or official rate.
  • moneychangers — Plural form of moneychanger.
  • mythicization — to turn into, treat, or explain as a myth.
  • mythification — to create a myth about (a person, place, tradition, etc.); cause to become a myth.
  • nanochemistry — (chemistry) The synthesis, analysis and characterization of chemical compounds at the nanoscale.
  • narcohypnosis — the use of drugs to induce hypnosis
  • nithiocyamine — Amoscanate.
  • nonhaemolytic — relating to a transfusion reaction in which the red blood cells survive
  • nonhysterical — not hysterical or funny
  • nonyl alcohol — any of several colorless or light-yellow, liquid, water-soluble isomers of the formula C 9 H 2 0 O, especially having a roselike odor: used chiefly in perfumery and flavoring.
  • nymphaeaceous — belonging to the Nymphaeaceae, the water lily family of plants.
  • nymphomaniacs — Plural form of nymphomaniac.
  • onychophagist — the practice of biting one's nails, especially when done habitually and as a symptom of emotional disturbance.
  • onychophorans — Plural form of onychophoran.
  • parasynthetic — the formation of a word by the addition of a derivational suffix to a phrase or compound, as of greathearted, which is great heart plus -ed.
  • parry channel — a water channel in N Canada running between Baffin Bay on the E and the Arctic Ocean on the W: separates the Queen Elizabeth Islands (N) from the rest of the Arctic Archipelago.
  • parthenocarpy — the production of fruit without fertilization of an egg in the ovary.
  • party machine — the internal organization of a political party, which decides its policies and directs its activities
  • pathogenicity — the disease-producing capacity of a pathogen.
  • pharmacognosy — materia medica (def 2).
  • pharyngectomy — excision of part or all of the pharynx.
  • pharyngoscope — an instrument for inspecting the pharynx.
  • pharyngoscopy — an examination by means of a pharyngoscope.
  • phenylic acid — phenol (def 1).
  • photodynamics — the science dealing with light and its effects on living organisms.
  • physharmonica — a keyboard musical instrument fitted with free reeds, and which is an early form of harmonium
  • physicianship — the position, function, or office of a physician.
  • polytechnical — relating to a technical school
  • psychasthenia — Psychiatry. (no longer in technical use) a neurosis marked by fear, anxiety, phobias, etc.
  • psychasthenic — a person who has psychasthenia
  • psychoanalyse — to investigate or treat by psychoanalysis.
  • psychoanalyst — a person trained to practice psychoanalysis.
  • psychoanalyze — to investigate or treat by psychoanalysis.
  • psychodynamic — Psychology. any clinical approach to personality, as Freud's, that sees personality as the result of a dynamic interplay of conscious and unconscious factors.
  • pyrotechnical — of or relating to pyrotechnics.
  • sand-yachting — the sport of riding in a sand yacht
  • scythian lamb — a fern, Cibotium barometz, of southeastern Asia, having stalks covered with shaggy, brownish hair and large, feathery leaves, formerly believed to be a source of vegetable wool.
  • shell company — A shell company is a company that another company takes over in order to use its name to gain an advantage.
  • shockumentary — a television programme showing members of the public in shocking or violent situations
  • splanchnology — the visceral system
  • spying charge — an accusation of having taken part in espionage
  • sunday school — a school, now usually in connection with a church, for religious instruction on Sunday.
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