15-letter words containing o, r, d, e, i
- ab urbe condita — from the founding of the city (Rome, about 753 b.c.). Abbreviation: A.U.C.
- absorption edge — a discontinuity in the graph of the absorption coefficient of a substance plotted against the wavelength of x-rays being absorbed, representing the minimum energy necessary to free electrons from particular shells of the atoms of the substance.
- accordion pleat — one of a series of narrow, evenly spaced parallel pleats with alternating raised and recessed folds set into cloth or other material, usually by a commercial pleating machine.
- accrued alimony — an amount of alimony that has not been paid
- acetyl chloride — a colourless pungent liquid used as an acetylating agent. Formula: CH3COCl
- acid test ratio — a ratio of cash, receivables, and marketable securities to current liabilities, used in determining credit risks.
- active hydrogen — hydrogen in the form of single atoms, rather than molecules, which makes it extremely reactive.
- addressing mode — 1. (processor, programming) One of a set of methods for specifying the operand(s) for a machine code instruction. Different processors vary greatly in the number of addressing modes they provide. The more complex modes described below can usually be replaced with a short sequence of instructions using only simpler modes. The most common modes are "register" - the operand is stored in a specified register; "absolute" - the operand is stored at a specified memory address; and "immediate" - the operand is contained within the instruction. Most processors also have indirect addressing modes, e.g. "register indirect", "memory indirect" where the specified register or memory location does not contain the operand but contains its address, known as the "effective address". For an absolute addressing mode, the effective address is contained within the instruction. Indirect addressing modes often have options for pre- or post- increment or decrement, meaning that the register or memory location containing the effective address is incremented or decremented by some amount (either fixed or also specified in the instruction), either before or after the instruction is executed. These are very useful for stacks and for accessing blocks of data. Other variations form the effective address by adding together one or more registers and one or more constants which may themselves be direct or indirect. Such complex addressing modes are designed to support access to multidimensional arrays and arrays of data structures. The addressing mode may be "implicit" - the location of the operand is obvious from the particular instruction. This would be the case for an instruction that modified a particular control register in the CPU or, in a stack based processor where operands are always on the top of the stack. 2. In IBM System 370/XA the addressing mode bit controls the size of the effective address generated. When this bit is zero, the CPU is in the 24-bit addressing mode, and 24 bit instruction and operand effective addresses are generated. When this bit is one, the CPU is in the 31-bit addressing mode, and 31-bit instruction and operand effective addresses are generated.
- adenocarcinomas — Plural form of adenocarcinoma.
- adhesive factor — the ratio of the force that can be exerted on driving wheels with full traction to the weight on the driving wheels, usually expressed as a percentage.
- adjective group — An adjective group or adjectival group is a group of words based on an adjective, such as 'very nice' or 'interested in football'. An adjective group can also consist simply of an adjective.
- admiralty house — the official residence of the Governor General of Australia, in Sydney
- adoption papers — documentation relating to the adoption of a particular child
- adrenalectomies — Plural form of adrenalectomy.
- aerobic dancing — a system of exercises combining aerobics with dance steps and usually done to music.
- aerodynamically — the branch of mechanics that deals with the motion of air and other gases and with the effects of such motion on bodies in the medium. Compare aerostatics (def 1).
- aerodynamicists — Plural form of aerodynamicist.
- aerotitis media — temporary deafness and pain arising from traumatic inflammation of the middle ear, caused by a rapid change in barometric pressure, as a rise in ambient cabin pressure in an aircraft descending from high altitude for landing.
- affaire d'amour — a love affair
- agree to differ — to end an argument amicably while maintaining differences of opinion
- air conditioned — If a room or vehicle is air conditioned, the air in it is kept cool and dry by means of a special machine.
- air conditioner — An air conditioner is a machine which keeps the air in a building cool and dry.
- airmail edition — an edition of a newspaper that is printed on very thin paper so it is easier and cheaper to distribute
- alexandroupolis — a port in NE Greece, in W Thrace. Pop: 52 720 (2001 est)
- allotetraploidy — the condition of being an allotetraploid
- amaryllidaceous — of, relating to, or belonging to the Amaryllidaceae, a family of widely cultivated flowering plants having bulbs and including the amaryllis, snowdrop, narcissus, and daffodil
- an axe to grind — an ulterior motive
- andrographolide — (organic compound) A bitter labdane diterpenoid that is the main bioactive component of the medicinal plant Andrographis paniculata, effective against certain cancers.
- andromonoecious — (of a plant species) having hermaphrodite and male flowers on the same plant
- androstenedione — a weak hormone, C19H26O2, produced by the ovaries, testes, and adrenal glands as a precursor to estrogen, testosterone, etc.: formerly taken in a concentrated tablet or capsule form as by some bodybuilders
- aneroid capsule — a box or chamber of thin metal, partially exhausted of air, used in the aneroid barometer and pressure altimeter.
- anti-productive — having the power of producing; generative; creative: a productive effort.
- aphrodite terra — a large plateau region that stretches approximately halfway around the middle latitude of Venus.
- apollo asteroid — one of a number of asteroids whose orbits cross that of the earth.
- apple-pie order — perfect order or condition
- arc de triomphe — the triumphal arch in Paris begun by Napoleon I to commemorate his victories of 1805–6 and completed in 1836
- arrondissements — Plural form of arrondissement.
- audio frequency — a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear
- audio recording — an electronic recording of sound
- auditor general — (in Canada) a federal official responsible for auditing government departments and making an annual report
- autodestructive — likely to cause one's own destruction
- automatic drive — an automotive transmission requiring either very little or no manual shifting of gears.
- autotetraploidy — the generation of the tetraploid state, created by the fusing of two nuclei from the same species
- azobisformamide — (chemistry) azodicarbonamide.
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- barium chloride — a poisonous compound, BaCl2, consisting of flat white crystals that are soluble in water: it is used to treat water, metals, leather, etc.
- barium peroxide — a gray-white powder, BaO2, used as a bleach and in making hydrogen peroxide
- basic autocoder — Early system on IBM 7070. Listed in CACM 2(5):16 (May 1959).
- basse-normandie — a region of NW France, on the English Channel: consists of the Cherbourg peninsula in the west rising to the Normandy hills in the east; mainly agricultural
- be delivered of — to give birth to
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