19-letter words containing m, e, c, h, a
- malice aforethought — a predetermination to commit an unlawful act without just cause or provocation (applied chiefly to cases of first-degree murder).
- malicious falsehood — a lie told by someone who knows the lie is false or knows it will do harm to the person it is concerning
- manchester autocode — (language, history) The predecessor of Mercury Autocode.
- manchester encoding — (communications, protocol) A method of transmitting bits which enables the receiver to easily synchronise with the sender. A simple way of signalling bits might be to transmit a high voltage for some period for a 1-bit and a low voltage for a 0 bit: Bits Sent: 1 1 0 0 Signal: High ___ Low |___ Time: -> . . . . . However, when several identical bits are sent in succession, this provides no information to the receiver about when each bit starts and stops. Manchester encoding splits each bit period into two, and ensures that there is always a transition between the signal levels in the middle of each bit. This allows the receiver to synchronise with the sender. In normal Manchester encoding, a 1-bit is transmitted with a high voltage in the first period, and a low voltage in the second, and vice verse for the 0 bit: Bits Sent: 1 1 0 0 Signal: High Low || |_| || Time: -> . ' . ' . ' . ' . In Differential Manchester encoding, a 1-bit is indicated by making the first half of the signal equal to the last half of the previous bit's signal and a 0-bit is indicated by making the first half of the signal opposite to the last half of the previous bit's signal. That is, a zero bit is indicated by a transition at the beginning of the bit. Like normal Manchester encoding, there is always a transition in the middle of the transmission of the bit. Differential Manchester Encoding Bits Sent: 1 1 0 0 Signal: High __ Low |_| || || Time: -> . ' . ' . ' . ' . With each bit period half as long, twice as much bandwidth is required when using either of the Manchester encoding schemes.
- manned space flight — space travel in vehicles with a human crew
- maraschino cherries — cherries in a syrup flavored with maraschino or, now usually, imitation maraschino
- maratha confederacy — a loose league of states in central and western India, c1750–1818.
- mary mcleod bethune — Mary McLeod [muh-kloud] /məˈklaʊd/ (Show IPA), 1875–1955, U.S. educator and civil-rights leader.
- mayor of the palace — one of a line of hereditary administrative lieutenants to the Merovingian kings who eventually took over royal function and title in the Frankish kingdoms; a palatine.
- mechanical scanning — Electronics. a technique for varying the sector covered by a transmitting or receiving antenna by rotating it.
- mechanical-engineer — the branch of engineering dealing with the design and production of machinery.
- meningoencephalitic — Relating to meningoencephalitis.
- meningoencephalitis — Inflammation of the membranes of the brain and the adjoining cerebral tissue.
- metaphosphoric acid — an acid, HPO 3 , derived from phosphorous pentoxide, and containing the smallest amount of water of the phosphoric acids.
- methyl methacrylate — a colorless, volatile, flammable, water-insoluble, liquid, unsaturated ester, C 5 H 8 O 2 , that polymerizes readily to a clear plastic.
- middle palaeolithic — the period between the Lower and the Upper Palaeolithic, usually taken as equivalent to the Mousterian
- miniature schnauzer — one of a German breed of sturdily built terriers resembling a smaller version of the standard schnauzer, having a wiry, pepper-and-salt, black, or black-and-silver coat, a rectangular head, bushy whiskers, and a docked tail, and originally developed as a farm dog but now raised primarily as a pet.
- mischaracterization — The act of characterizing something in an inaccurate or misleading way.
- missouri meerschaum — corncob (def 2).
- molar heat capacity — the heat capacity of one mole of a substance.
- moses-in-the-cradle — a plant, Rhoeo spathacea, native to the West Indies and Central America, having leaves with purple undersides and white flowers enclosed in a boat-shaped envelope formed by two bracts.
- motivation research — the application of the knowledge and techniques of the social sciences, especially psychology and sociology, to understanding consumer attitudes and behavior: used as a guide in advertising and marketing.
- mouse-ear chickweed — any of various similar and related plants of the genus Cerastium
- mucopolysaccharides — Plural form of mucopolysaccharide.
- muhammadan calendar — Muslim calendar.
- multiplexor channel — (MPX) mainframe terminology for a slow peripheral device connection, e.g. for a printer, operator console, or card reader.
- munchausen syndrome — a factitious disorder in which otherwise healthy individuals seek to hospitalize themselves with feigned or self-induced pathology in order to receive surgical or other medical treatment.
- neuropsychodynamics — The theoretical synthesis of neuroscience and psychodynamics.
- neville chamberlain — (Arthur) Neville, 1869–1940, British statesman: prime minister 1937–40.
- newtonian mechanics — the branch of mechanics that is based on Newton's laws of motion and that is applicable to systems that are so large that Planck's constant can be regarded as negligibly small (distinguished from quantum mechanics).
- niccolo machiavelli — Niccolò di Bernardo [neek-kaw-law dee ber-nahr-daw] /ˌnik kɔˈlɔ di bɛrˈnɑr dɔ/ (Show IPA), 1469–1527, Italian statesman, political philosopher, and author.
- not worth a crumpet — utterly worthless
- on an empty stomach — If you do something on an empty stomach, you do it without having eaten.
- palisade parenchyma — the upper layer of ground tissue in a leaf, consisting of elongated cells beneath and perpendicular to the upper epidermis and constituting the primary area of photosynthesis.
- parasympathomimetic — having an effect similar to that produced when the parasympathetic nervous system is stimulated
- paumotu archipelago — Tuamotu Archipelago.
- phacoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
- phakoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
- phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
- photographic memory — total recall
- physical impairment — A physical impairment is a condition in which a part of a person's body is damaged or is not working properly.
- physically impaired — with reduced or weakened physical capacity
- pinwheel escapement — a clock escapement in which two pallets, usually of unequal length, alternately engage and release pins set on the escape wheel perpendicular to its plane of rotation.
- pistachio ice cream — ice cream flavoured with pistachios
- pneumoencephalogram — an encephalogram made after the replacement of the cerebrospinal fluid by air or gas, rarely used since the development of the CAT scanner.
- programmer's switch — (hardware) A button on the front of some Apple Macintosh computers which, when pressed, causes a command line prompt to appear. This gives access to the built-in mini-debugger, which has commands to dump memory, return to the application that was broken out, and others. A more sophisticated debugger must be installed in order to inspect breakpoints, etc.
- psychrometric chart — a chart for calculating values of relative humidity, absolute humidity, and dew point from psychrometer readings.
- radiopharmaceutical — any of a number of radioactive drugs used diagnostically or therapeutically.
- rec room (or hall) — recreation room (or hall)
- releasing mechanism — a hypothetical control complex in the central nervous system of animals that triggers the appropriate behavioral response to a releaser.