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15-letter words containing a, y, e, r

  • daguerreotypist — an obsolete photographic process, invented in 1839, in which a picture made on a silver surface sensitized with iodine was developed by exposure to mercury vapor.
  • daily newspaper — A daily newspaper is a newspaper that is published every day of the week except Sunday.
  • dairy ice cream — ice cream made from milk rather than artificial ingredients
  • dark-eyed junco — a common North American junco, Junco hyemalis, having a pink bill, gray and brown body plumage, white belly and outer tail feathers, and differing from other species of junco in having a dark brown rather than yellow iris.
  • data link layer — (networking)   Layer two, the second lowest layer in the OSI seven layer model. The data link layer splits data into frames (see fragmentation) for sending on the physical layer and receives acknowledgement frames. It performs error checking and re-transmits frames not received correctly. It provides an error-free virtual channel to the network layer. The data link layer is split into an upper sublayer, Logical Link Control (LLC), and a lower sublayer, Media Access Control (MAC). Example protocols at this layer are ABP, Go Back N, SRP.
  • data redundancy — (data, communications, storage)   Any technique that stores or transmits extra, derived data that can be used to detect or repair errors, either in hardware or software. Examples are parity bits and the cyclic redundancy check. If the cost of errors is high enough, e.g. in a safety-critical system, redundancy may be used in both hardware AND software with three separate computers programmed by three separate teams ("triple redundancy") and some system to check that they all produce the same answer, or some kind of majority voting system. The term is not typically used for other, less beneficial, duplication of data. 2.   (communications)   The proportion of a message's gross information content that can be eliminated without losing essential information. Technically, redundancy is one minus the ratio of the actual uncertainty to the maximum uncertainty. This is the fraction of the structure of the message which is determined not by the choice of the sender, but rather by the accepted statistical rules governing the choice of the symbols in question.
  • day of the lord — Also called Day of Yahweh. (in Old Testament eschatology) a day of final judgment. Amos 5:18–21; Ezek. 30.
  • decarboxylation — the removal or loss of a carboxyl group from an organic compound
  • decipherability — to make out the meaning of (poor or partially obliterated writing, etc.): to decipher a hastily scribbled note.
  • decorated style — a 14th-century style of English architecture characterized by the ogee arch, geometrical tracery, and floral decoration
  • dehydrogenating — Present participle of dehydrogenate.
  • dehydrogenation — to remove hydrogen from (a compound).
  • delayed neutron — a neutron produced in a nuclear reactor by the breakdown of a fission product and released a short time after neutrons produced in the primary process
  • delivery charge — A delivery charge is the cost of transporting or delivering goods.
  • delsarte system — a method of teaching drama and dancing based on the exercises of Alexandre Delsarte (1811–71), famous teacher at the Paris Conservatoire
  • demographically — of or relating to demography, the science of vital and social statistics.
  • demonstrability — The quality of being demonstrable.
  • demonstratively — characterized by or given to open exhibition or expression of one's emotions, attitudes, etc., especially of love or affection: She wished her fiancé were more demonstrative.
  • dephosphorylate — to remove a phosphate group from (an organic compound)
  • depletion layer — a region at the interface between dissimilar zones of conductivity in a semiconductor, in which there are few charge carriers
  • dermatoglyphics — the lines forming a skin pattern, esp on the palms of the hands and soles of the feet
  • dermatomyositis — a chronic medical condition characterized by inflammation of muscles (myositis), accompanied by a skin rash
  • dermatophytosis — a fungal infection of the skin, esp the feet
  • determinability — the quality of being determinable
  • diphenhydramine — a white, crystalline, antihistaminic compound, C 17 H 21 NO, used orally, topically, and parenterally, especially for allergies.
  • discretionarily — subject or left to one's own discretion.
  • dishearteningly — In a disheartening manner.
  • disreputability — The state of being disreputable.
  • dixiecrat party — States' Rights Democratic Party.
  • do your head in — If something or someone does your head in, they make you angry or frustrated.
  • dorsiventrality — The quality of being dorsiventral.
  • dorsoventrality — Zoology. pertaining to the dorsal and ventral aspects of the body; extending from the dorsal to the ventral side: the dorsoventral axis.
  • double jeopardy — the subjecting of a person to a second trial or punishment for the same offense for which the person has already been tried or punished.
  • dougherty wagon — a horse- or mule-drawn passenger wagon having doors on the side, transverse seats, and canvas sides that can be rolled down.
  • duty to retreat — a legal principle that requires a person as a first response to back away or flee from a threatening situation rather than attempt self-defense by deadly force: Duty to retreat has always been a debatable doctrine.
  • dvorak keyboard — a keyboard designed to facilitate typing speed by having the most frequently used characters on the home row, with all the vowels on the left side.
  • early admission — a plan for admission to colleges in the US, in which students apply to colleges earlier in the year than is customary and receive their results earlier too
  • early christian — denoting or relating to the style of architecture that started in Italy in the 3rd century ad and spread through the Roman empire until the 5th century
  • early saxifrage — an eastern North American plant, Saxifraga virginiensis, of the saxifrage family, having toothed basal leaves and branched clusters of small white flowers.
  • early-type star — any massive hot star of spectral type O, B, or A
  • econometrically — In terms of econometrics.
  • economy measure — any method of reducing expenditure and hence saving money
  • egyptian clover — a Mediterranean clover, Trifolium alexandrinum, grown as a forage crop and to improve the soil in the southwestern US and the Nile valley
  • egyptian jasper — a type of jasper, generally with zones of colour, found in desert regions of Egypt
  • electroanalyses — Plural form of electroanalysis.
  • electroanalysis — (physics, chemistry) Any of several electrochemical forms of analysis.
  • electrodialyses — Plural form of electrodialysis.
  • electrodialysis — Dialysis in which the movement of ions is aided by an electric field applied across the semipermeable membrane.
  • electrodialytic — Relating to electrodialysis.
  • electrodynamics — The branch of mechanics concerned with the interaction of electric currents with magnetic fields or with other electric currents.
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