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21-letter words containing o, p, e, n

  • development education — an area of study that aims to give pupils an understanding of their involvement in world affairs
  • developmental biology — the study of the development of multicellular organisms, including the study of the earliest stages of embryonic structure and tissue differentiation
  • dew-point temperature — the temperature to which air must be cooled, at a given pressure and water-vapor content, for it to reach saturation; the temperature at which dew begins to form.
  • difference of opinion — disagreement
  • differential operator — a function, usually expressed as a polynomial, that indicates linear combinations of the derivatives of the expression on which it operates.
  • differential topology — the branch of topology that studies the properties of differentiable manifolds that remain invariant under diffeomorphisms.
  • disk operating system — DOS.
  • disruptive technology — A disruptive technology is a new technology, such as computers and the Internet, which has a rapid and major effect on technologies that existed before.
  • double predestination — the doctrine that God has foreordained both those who will be saved and those who will be damned.
  • double spanish burton — a tackle having one standing block and two running blocks, giving a mechanical advantage of five, neglecting friction.
  • drop in someone's lap — give someone the responsibility of
  • drop the handkerchief — a children's game in which all the players but one stand in a circle facing inward, while that one player stealthily drops a handkerchief behind a player in the circle who must pursue and attempt to catch the one who dropped the handkerchief before the latter reaches the vacated place.
  • earthmoving equipment — machines, such as bulldozers, that are used for excavating and moving large quantities of earth
  • eastern european time — a standard time used by some countries in Eastern Europe, such as Finland, Romania, etc and also some countries of the Middle East and North Africa
  • electric polarization — Electric polarization is the type of polarization of electricity that occurs in a dielectric.
  • electroencephalograms — Plural form of electroencephalogram.
  • electroencephalograph — A machine used for electroencephalography.
  • electromagnetic pulse — a surge of electromagnetic radiation, esp one resulting from a nuclear explosion, which can disrupt electronic devices and, occasionally, larger structures and equipment
  • electronic publishing — Electronic publishing is the publishing of documents in a form that can be read on a computer, for example as a CD-ROM.
  • electronic typewriter — a keyboard machine for writing electromechanically in characters resembling print
  • electronystagmography — A diagnostic test to record involuntary movements of the eye caused by a condition known as nystagmus. It can also be used to diagnose the cause of vertigo, dizziness or balance dysfunction by testing the vestibular system.
  • employee contribution — money contributed by an employee to his or her employer's pension fund
  • employer contribution — money contributed by an employer to his or her employee's pension fund
  • endoplasmic reticulum — an extensive intracellular membrane system whose functions include synthesis and transport of lipids and, in regions where ribosomes are attached, of proteins
  • enter into the spirit — If you enter into the spirit of something, you take part in it in an enthusiastic way.
  • equiangular hyperbola — a hyperbola with transverse and conjugate axes equal to each other.
  • european central bank — the central bank of the European Union, established in 1998 to oversee the process of European Monetary Union and subsequently to direct monetary policy within the countries using the euro
  • european space agency — an organization dedicated to space exploration with 18 European countries as members
  • exposure compensation — the act of overriding a camera's automatic exposure in order to achieve a particular effect or due to difficult lighting conditions
  • flip someone the bird — give someone the finger (see phrase under finger)
  • flotation compartment — in a boat, an enclosed section filled with air or gas to give buoyancy
  • foreground processing — a type of processing that supports interaction between interactive and batch operations
  • foreign correspondent — a correspondent, as for a periodical, assigned to send back articles and news dispatches from a foreign country for publication.
  • forensic anthropology — the branch of physical anthropology in which anthropological data, criteria, and techniques are used to determine the sex, age, genetic population, or parentage of skeletal or biological materials in questions of civil or criminal law.
  • framing specification — A specification of the "protocol bits" that surround the "data bits" on a communications channel to allow the data to be "framed" into chunks, like start and stop bits in EIA-232. It allows a receiver to synchronize at points along the data stream.
  • freedom of expression — the unrestrained right to voice ideas, opinions, etc
  • french fried potatoes — a more formal name for chips
  • frequent wash shampoo — a shampoo whose mildness allows it to be used frequently
  • functional dependency — (database)   Given a relation R (in a relational database), attribute Y of R is functionally dependent on attribute X of R and X of R functionally determines Y of R (in symbols R.X -> R.Y) if and only if each X in R has associated with it precisely one Y in R (at any one time). Attributes X and Y may be composite. This is very close to a function in the mathematical sense.
  • functional imperative — a requirement for the survival of any social system, as communication, control of conflict, or socialization.
  • gastrohepatic omentum — lesser omentum.
  • gender disappointment — a feeling of depression or anxiety experienced by an expectant parent when the gender of the baby does not match his or her preference
  • genetic amplification — an increase in the frequency of replication of a DNA segment.
  • geometric progression — a sequence of terms in which the ratio between any two successive terms is the same, as the progression 1, 3, 9, 27, 81 or 144, 12, 1, 1/12, 1/144.
  • gird (up) one's loins — to get ready to do something difficult or strenuous
  • give place to someone — to make room for or be superseded by someone
  • give someone a leg up — to help someone to climb an obstacle by pushing upwards
  • give someone the slip — to move, flow, pass, or go smoothly or easily; glide; slide: Water slips off a smooth surface.
  • glacier national park — a national park in NW Montana: glaciers; lakes; forest reserve. 1534 sq. mi. (3970 sq. km).
  • go down like ninepins — (of each of a group of people) to become ill very easily and quickly
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