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20-letter words containing a, g, r, i

  • matched-pairs design — (of an experiment) concerned with measuring the values of the dependent variables for pairs of subjects that have been matched to eliminate individual differences and that are respectively subjected to the control and the experimental condition
  • medical underwriting — Medical underwriting is the use of medical or health status information in the evaluation of an applicant for life or health insurance.
  • megakaryocytopoiesis — (biology) The cellular development process that leads to platelet production.
  • mickey mouse program — (jargon)   The North American equivalent of a "noddy program", i.e. trivial. The term doesn't necessarily have the belittling connotations of mainstream slang "Oh, that's just mickey mouse stuff!"; sometimes trivial programs can be very useful.
  • microwave background — a background of microwave electromagnetic radiation with a black-body spectrum discovered in 1965, understood to be the thermal remnant of the big bang with which the universe began
  • military engineering — the design, construction, etc, of military fortifications and communications
  • minimum lending rate — the official interest rate charged by the Bank of England and below which it will refrain from lending money.
  • molecular geneticist — a specialist in the study of the molecular constitution of genes and chromosomes
  • mopping-up operation — an operation after a battle or campaign to root out remaining enemy forces or installations
  • morning glory family — the plant family Convulvulaceae, characterized by twining herbaceous vines, shrubs, and trees having alternate, simple, or compound leaves, funnel-shaped, often showy flowers, and fruit in the form of a berry or capsule, and including bindweed, dodder, moonflower, morning glory, and sweet potato.
  • most general unifier — (logic)   If U is the most general unifier of a set of expressions then any other unifier, V, can be expressed as V = UW, where W is another substitution. See also unification.
  • 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.
  • multiplicative group — a group in which the operation of the group is multiplication.
  • 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.
  • negative electricity — the electricity present in a body or substance that has an excess of electrons, as the electricity developed on a resin when rubbed with flannel.
  • neighbourhood warden — a person employed by a local authority to patrol residential areas and deal with antisocial behaviour
  • nephroangiosclerosis — (pathology) sclerosis of the renal arterioles.
  • net register tonnage — the taxable gross tonnage of a merchant ship.
  • neurophysiologically — In terms of, or with regard to, neurophysiology.
  • neuropsychologically — In terms of or by means of neuropsychology.
  • nictitating membrane — a thin membrane, or inner or third eyelid, present in many animals, capable of being drawn across the eyeball, as for protection.
  • night storage heater — a heater or radiator that stores heat at night-time because electricity is cheaper
  • nikkei stock average — an index of prices on the Tokyo Stock Exchange
  • non-volatile storage — (storage)   (NVS, persistent storage, memory) A term describing a storage device whose contents are preserved when its power is off. Storage using magnetic media (e.g. magnetic disks, magnetic tape or bubble memory) is normally non-volatile by nature whereas semiconductor memories (static RAM and especially dynamic RAM) are normally volatile but can be made into non-volatile storage by having a (rechargable) battery permanently connected. Other examples of non-volatile storage are EEPROM, CD-ROM, paper tape and punched cards.
  • nonrepeating decimal — a decimal representation of any irrational number, having the property that no sequence of digits is repeated ad infinitum.
  • normal magnification — the magnification produced by a telescope or microscope such that the diameter of the exit pupil of the instrument is equal to the diameter of the pupil of the eye.
  • northern leaf blight — a disease of corn caused by the fungus Exsherohilum turcicum, characterized by elongate tan-gray elliptical spots with subsequent blighting and necrosis of leaves.
  • norwegian forest cat — a breed of long-haired cat with a long bushy tail and a long mane
  • occupation groupings — a system of classifying people according to occupation, based originally on information obtained by government census and subsequently developed by market research. The classifications are used by the advertising industry to identify potential markets. The groups are A, B, C1, C2, D, and E
  • ode on a grecian urn — a poem (1819) by Keats.
  • off-the-job training — training which is carried out away from your normal place of work
  • officer of the guard — an officer, acting under the officer of the day, who is responsible for the instruction, discipline, and performance of duty of the guard in a post, camp, or station. Abbreviation: OG, O.G.
  • 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 the drawing board — in the planning stage
  • 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.
  • open learning centre — an establishment which provides further education on a flexible part-time basis
  • operant conditioning — conditioning (def 1).
  • operating conditions — Operating conditions are a set of conditions for operating a particular system or process.
  • operational strategy — a plan or set of plans for successfully running a business, etc
  • operator overloading — overloading
  • optical mark reading — the reading of marks by an optical device whereby the information can be stored in machine-readable form
  • order bill of lading — a bill of lading that is issued to the order of a shipper or consignee for delivery of the goods and that can be transferred by endorsement to third parties.
  • organization expense — the costs associated with organizing a business entity and bringing it into existence
  • orthognathic surgery — the surgical correction of deformities or malpositions of the jaw.
  • oscillating universe — a variant model of the closed universe in which the universe undergoes cycles of expansion and contraction.
  • ovo-lacto vegetarian — a vegetarian who eats eggs and dairy products
  • ovo-lacto-vegetarian — lacto-ovo-vegetarian.
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