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20-letter words containing a, m, e

  • mother-of-pearl moth — a pyralid moth, Pleuroptya ruralis, having a pale sheen, that is often seen around nettles, on which its green larvae feed
  • motor neuron disease — Motor neuron disease is a disease which destroys the part of a person's nervous system that controls movement.
  • mountain rescue team — a group of people who conduct search and rescue on a mountain, for example of someone who has fallen, got lost, etc
  • mpeg-1 audio layer 1 — (audio, compression, algorithm)   (MP1) A simple 32-subband audio compressor using a floating point representation for subband samples. Resolution and scale factor are stored for groups of 12 subsamples. MP1 is only used for Philips DCC Digital Compact cassette with data rates of 384 kbps.
  • mpeg-1 audio layer 3 — (music, file format)   (MP3) A digital audio compression algorithm that acheives a compression factor of about twelve while preserving sound quality. It does this by optimising the compression according to the range of sound that people can actually hear. MP3 is currently (July 1999) the most powerful algorithm in a series of audio encoding standards developed under the sponsorship of the Moving Picture Experts Group (MPEG) and formalised by the International Organization for Standardization (ISO). MP3 is very different from Layer 2, using an additional MDCT layer to increase frequency resolution. Its scale factor groups are more optimised for the human ear, and it uses nonlinear sample quantisation and Huffman coding. MP3 files (filename extension ".mp3") can be downloaded from many websites and can be played using software available for most operating systems (also downloadable), e.g. Winamp for PC, MacAmp for Macintosh, and mpeg123 for Unix. MP3 files are usually downloaded completely before playing but streaming MP3 is also possible. A program called a "ripper" can be used to copy a selection from a music CD onto your hard disk and another program called an encoder can convert it to an MP3 file.
  • mpeg-2 audio layer 3 — (compression, standard, algorithm, file format)   An extention of MPEG-1 audio layer 3 for lower sampling rates (16-24 kHz) targeting bit rates from 32-64 kbps (possibly 8-160 kbps). It is often combined with MPEG-2 LSF.
  • multicast addressing — Ethernet addressing scheme used to send packets to devices of a certain type or for broadcasting to all nodes. The least significant bit of the most significant byte of a multi-cast address is one.
  • multimedia extension — Matrix Math eXtensions
  • multipart stationery — continuous stationery comprising two or more sheets, either carbonless or with carbon paper between the sheets
  • multiple inheritance — (programming)   In object-oriented programming, the possibility that a class may have more than one direct superclass in the class hierarchy. The opposite is single inheritance.
  • multiple personality — a rare disorder in which an individual displays several functionally dissociated personalities, each of a complexity comparable to that of a normal individual.
  • multiplication table — Arithmetic. a tabular listing of the products of any two numbers of a set, usually of the integers 1 through 10 or 1 through 12.
  • multiplicative group — a group in which the operation of the group is multiplication.
  • multistep hydroplane — a motorship having a flat bottom built as a series of planes inclined forward, the ship planing on each from stem to stern as its speed increases.
  • multistorey car park — a car park consisting of several levels
  • mum-and-dad investor — a small-scale non-professional investor
  • navigable semicircle — the less violent half of a cyclone; the half blowing in the direction opposite to that in which the cyclone is moving and in which a vessel can run before the wind.
  • neapolitan ice cream — variously flavored and colored ice cream and ice mixtures frozen in layers.
  • near someone's heart — dear or important to someone
  • near-market research — scientific research that, while not linked to the development of a specific product, is likely to be commercially exploitable
  • negative campaigning — political campaigning in which a politician or party focuses on criticizing another politician or party rather than emphasizing their own positive qualities
  • nemine contradicente — no one contradicting; unanimously.
  • neon lamp (or tube) — a discharge lamp containing neon, that ionizes and glows with a red light (neon light) when an electric current is sent through it: used esp. in advertising signs
  • neuromusculoskeletal — (medicine) Describing the interactions between nerves, muscles and the skeleton.
  • new democratic party — the Canadian social democratic party formed in 1961
  • new jerusalem church — a sect founded in 1787, based on Swedenborgianism
  • newcastle-under-lyme — a town in W central England, in Staffordshire. Pop: 74 427 (2001)
  • next program counter — (architecture)   (nPC) A register in a CPU that contains the address of the instruction to be executed next.
  • nictitating membrane — a thin membrane, or inner or third eyelid, present in many animals, capable of being drawn across the eyeball, as for protection.
  • niemann-pick disease — a rare, hereditary lipid-storage disease, occurring primarily among Ashkenazic Jews, in which abnormal lipid metabolism results in enlargement of the liver, spleen, and lymph nodes, and in progressive mental and physical deterioration.
  • nineteenth amendment — an amendment to the U.S. Constitution, ratified in 1920, guaranteeing women the right to vote.
  • no lack of something — If you say there is no lack of something, you are emphasizing that there is a great deal of it.
  • nonrepeating decimal — a decimal representation of any irrational number, having the property that no sequence of digits is repeated ad infinitum.
  • normal zeeman effect — the dividing of a spectral line or lines as a result of placing a radiation source in a magnetic field. The division consists of three equally spaced lines (normal Zeeman effect) in systems for which the spin quantum number is zero, or of three or more unequally spaced lines (anomalous Zeeman effect) in systems for which the spin quantum number is not zero.
  • north american plate — a major tectonic division of the earth's crust, comprising Greenland and the continent of North America and the suboceanic Labrador and North American Basins, and bounded on the east by the Mid-Atlantic Ridge, on the south by the Caribbean and South American Plates, and on the west by the San Andreas fault and Aleutian Trench.
  • north temperate zone — the part of the earth's surface between the tropic of Cancer and the Arctic Circle.
  • not have the stomach — If you have no stomach for something, you do not have the courage to do it.
  • notre dame mountains — a mountain range in E Quebec, Canada, an extension of the Green Mountains in Vermont and a portion of the Appalachian Mountains: about 500 miles (800 km) long, rising about 2000 feet (610 meters).
  • objective relativism — the doctrine that knowledge of real objects is relative to the individual.
  • old man of the woods — an edible, mild-tasting mushroom, Strobilomyces floccopus, occurring in coniferous woodlands of eastern North America.
  • omega-3 (fatty acid) — a type of polyunsaturated fatty acid in fish oil, shellfish, soybeans, etc., linked to low cholesterol and low LDL levels
  • omega-minus particle — a baryon with strangeness −3, isotopic spin 0, and negative charge; predicted from the mathematics of the Eightfold Way and subsequently discovered. Symbol: Ω −.
  • on someone's account — Your feelings on someone's account are the feelings you have about what they have experienced or might experience, especially when you imagine yourself to be in their situation.
  • one's spiritual home — Your spiritual home is the place where you feel that you belong, usually because your ideas or attitudes are the same as those of the people who live there.
  • ontological argument — an a priori argument for the existence of God, asserting that as existence is a perfection, and as God is conceived of as the most perfect being, it follows that God must exist; originated by Anselm, later used by Duns Scotus, Descartes, and Leibniz.
  • ophthalmodynamometer — a device for determining the nearest point of ocular convergence.
  • optical mark reading — the reading of marks by an optical device whereby the information can be stored in machine-readable form
  • orthopaedic mattress — a specially firm mattress designed to help correct or ameliorate the discomfort of disorders of the spine and joints
  • pale western cutworm — the larva of a noctuid moth, Agrotis orthogonia, of the western U.S. and Canada, that seriously damages grains, beets, potatoes, alfalfa, etc., by feeding underground on roots and stems.
  • pan-american highway — a road system proposed in the 1920s linking nations of the Western Hemisphere, extending from Alaska to Santiago, Chile, with some gaps remaining in Panama and Colombia. The section between Nuevo Laredo, Mexico and Panama City is known as the Inter-American Highway Total length about 16,000 miles (25,744 km).
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