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20-letter words containing a, i, o

  • dimensional analysis — a method for comparing the dimensions of the physical quantities occurring in a problem to find relationships between the quantities without having to solve the problem completely. Compare dimension (def 6).
  • diophantine analysis — any of several methods for finding integral solutions for equations with more than one variable whose coefficients are integers.
  • diophantine equation — an equation involving more than one variable in which the coefficients of the variables are integers and for which integral solutions are sought.
  • diplomatic secretary — secretary (def 5).
  • diplomatic-secretary — secretary (def 5).
  • dirac delta function — delta function.
  • direct memory access — (architecture)   (DMA) A facility of some architectures which allows a peripheral to read and write memory without intervention by the CPU. DMA is a limited form of bus mastering.
  • directional drilling — a method of drilling for oil in which the well is not drilled vertically, as when a number of wells are to be drilled from a single platform to reach different areas of an oil field
  • directory assistance — a telephone company service that furnishes telephone directory information over the telephone.
  • directory user agent — (DUA) The software that accesses the X.500 Directory Service on behalf of the directory user. The directory user may be a person or another software element.
  • disability allowance — an amount of money paid by the government to people who are unable to work because of a disability. This is a general term or, in the UK, a shorter way of referring to what is officially called the Disability Living Allowance
  • discounted cash flow — a technique for appraising an investment that takes into account the different values of future returns according to when they will be received
  • discretionary income — money for luxuries
  • diskless workstation — (computer, networking)   A personal computer or workstation which has neither a hard disk nor floppy disk drive and which performs all file access via a local area network connection to a file server. The lowest level bootstrap code is stored in non-volatile storage. This uses a simple protocol such as BOOTP to request and download more sophisticated boot code and eventually, the operating system. The archtypal product was the 3Station developed by Bob Metcalfe at 3Com. Another example was the Sun 3/50. Diskless workstations are ideal when many users are running the same application. They are small, quiet, more reliable than products with disks, and help prevent both the theft of data and the introduction of viruses since the software and data available on them is controlled by the network administrator or system administrator. They do however rely on a server which becomes a disadvantage if it is heavily loaded or down. See also breath-of-life packet.
  • dispersion hardening — the strengthening of an alloy as a result of the presence of fine particles in the lattice
  • displacement tonnage — the number of long tons of water displaced by a vessel, light or load displacement being specified.
  • disproportionateness — The state or quality of being disproportionate or out of proportion.
  • distribution channel — trade: retailer
  • district of columbia — a federal area in the E United States, on the Potomac, coextensive with the federal capital, Washington. 69 sq. mi. (179 sq. km). Abbreviation: DC (for use with zip code), D.C.
  • do someone a service — If you do someone a service, you do something that helps or benefits them.
  • docosahexaenoic acid — DHA.
  • documentary evidence — law: written
  • domestic heating oil — a liquid petroleum product used to fuel residential building furnaces or boilers
  • double fertilization — the fertilization process characteristic of flowering plants, in which one sperm cell of a pollen grain fertilizes an egg cell while a second fuses with two polar nuclei to produce a triploid body that gives rise to the endosperm.
  • double-trailer truck — tandem trailer (def 1).
  • drunk and disorderly — If someone is charged with being drunk and disorderly, they are charged with being drunk and behaving in a noisy, offensive, or violent way in public.
  • duck-billed dinosaur — hadrosaur.
  • early modern english — the English language represented in printed documents of the period starting with Caxton (1476) and ending with Dryden (1700).
  • early sunday morning — a painting (1930) by Edward Hopper.
  • eastern roman empire — the eastern of the two empires created by the division of the Roman Empire in 395 ad
  • eat high off the hog — a hoofed mammal of the family Suidae, order Artiodactyla, comprising boars and swine.
  • ecclesiastical court — a church court in ecclesiastical matters, presided over by members of the clergy and usually having no compulsory jurisdiction.
  • ecological footprint — a mark left by the shod or unshod foot, as in earth or sand.
  • economic rationalism — an economic policy based on the efficiency of market forces, characterized by minimal government intervention, tax cuts, privatization, and deregulation of labour markets
  • education department — the department of a local authority that is concerned with education, or the government department concerned with education
  • educational quotient — a numerical measure of an educational system's effectiveness, based on standardized test scores, graduation rate, and other factors.
  • effective computable — (theory)   A term describing a function for which there is an effective algorithm that correctly calculates the function. The algorithm must consist of a finite sequence of instructions.
  • eleanor of aquitaine — ?1122–1204, queen of France (1137–52) by her marriage to Louis VII and queen of England (1154–89) by her marriage to Henry II; mother of the English kings Richard I and John
  • electoral boundaries — the way that a country or area is divided for the purposes of voting in an election
  • electrocardiographic — Of or pertaining to an electrocardiogram (ECG) or electrocardiograph.
  • electrohydrodynamics — (physics) the study of the dynamics of electrically conducting fluid.
  • electromagnetic pump — a device for pumping liquid metals by placing a pipe between the poles of an electromagnet and passing a current through the liquid metal
  • electromagnetic unit — any unit that belongs to a system of electrical cgs units in which the magnetic constant is given the value of unity and is taken as a pure number
  • electromagnetic wave — a wave of energy propagated in an electromagnetic field
  • electronic signature — electronic proof of a person's identity
  • electrophysiological — Of or pertaining to electrophysiology.
  • elementary education — the first six to eight years of a child's education
  • elephant in the room — an obvious truth deliberately ignored by all parties in a situation
  • elizabeth of hungary — Saint. 1207–31, Hungarian princess who devoted herself to charity and asceticism. Feast day: Nov 17 and 19
  • embryo vitrification — a method of in vitro fertilization in which the embryo is exposed to a vitreous solution and frozen before being thawed and implanted into the uterus
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