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15-letter words containing a, l, d, r

  • diagonal matrix — a square matrix in which all the entries except those along the diagonal from upper left to lower right are zero.
  • diaheliotropism — the tendency among plants to respond to the light of the sun by orienting their leaves perpendicular to the sun's rays, such that the upper surface of the leaves receives maximum light
  • diastrophically — in a diastrophic fashion
  • dichloromethane — a noxious colourless liquid widely used as a solvent, e.g. in paint strippers. Formula: CH2Cl2
  • dictatorialness — The state or quality of being dictatorial.
  • diffrangibility — the power or capability of being diffracted
  • digital carrier — (hardware, communications)   A medium which can carry digital signals; broadly equivalent to the physical layer of the OSI seven layer model of networks. Carriers can be described as baseband or broadband. A baseband carrier can include direct current (DC), whereas broadband carriers are modulated by various methods into frequency bands which do not include DC. Sometimes a modem (modulator/demodulator) or codec (coder/decoder) combines several channels on one transmission path. The combining of channels is called multiplexing, and their separation is called demultiplexing, independent of whether a modem or codec bank is used. Modems can be associated with frequency division multiplexing (FDM) and codecs with time division multiplexing (TDM) though this grouping of concepts is somewhat arbitrary. If the medium of a carrier is copper telephone wire, the circuit may be called T1, T3, etc. as these designations originally described such. T1 carriers used a restored polar line coding scheme which allowed a baseband signal to be transported as broadband and restored to baseband at the receiver. T1 is not used in this sense today, and indeed it is often confused with the DS1 signal carried.
  • dilatory motion — a formal proposal to be discussed and voted on in a debate whose effect is to interrupt the business under discussion at the time
  • direct dialling — a service which allows telephone users to make international calls without operator assistance
  • direction angle — an angle made by a given vector and a coordinate axis.
  • disarticulating — Present participle of disarticulate.
  • disarticulation — The act of disarticulating.
  • disaster relief — financial or physical help provided to people or areas hit by a disaster
  • disciplinarians — Plural form of disciplinarian.
  • discretionarily — subject or left to one's own discretion.
  • disgracefulness — The state or quality of being disgraceful.
  • dishearteningly — In a disheartening manner.
  • disinflationary — (economics) Exhibiting or causing reduced inflation.
  • disproportional — not in proportion; disproportionate.
  • disreputability — The state of being disreputable.
  • dissimilarities — Plural form of dissimilarity.
  • distilled water — water from which impurities, as dissolved salts and colloidal particles, have been removed by one or more processes of distillation; chemically pure water.
  • distractibility — inability to sustain one's attention or attentiveness, which is rapidly diverted from one topic to another: a symptom of a variety of mental disorders, as manic disorder, schizophrenia, or anxiety states.
  • distress signal — a signal used, or designed to be used, by persons in peril, for the purpose of summoning aid, indicating their position, etc., as a radio code sign, aerial flare, flag hoist, or the like. Compare distress call (def 1).
  • disulfuric acid — pyrosulfuric acid
  • dithyrambically — In dithyrambic fashion.
  • divide and rule — You use divide and rule to refer to a policy which is intended to keep someone in a position of power by causing disagreements between people who might otherwise unite against them.
  • doctoral thesis — a thesis written as part of a doctorate
  • dolomite marble — coarse-grained dolomite.
  • dominical altar — a high altar.
  • dongola leather — a leather similar to kid, made from goatskin, sheepskin, or calfskin.
  • 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 in brass — twice as large, heavy, strong, etc.; twofold in size, amount, number, extent, etc.: a double portion; a new house double the size of the old one.
  • double integral — an integral in which the integrand involves a function of two variables and that requires two applications of the integration process to evaluate.
  • 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.
  • double standard — any code or set of principles containing different provisions for one group of people than for another, especially an unwritten code of sexual behavior permitting men more freedom than women. Compare single standard (def 1).
  • double-barreled — having two barrels mounted side by side, as a shotgun.
  • double-breasted — (of a coat, jacket, etc.) overlapping sufficiently in front to allow for two rows of buttons.
  • doublet pattern — a pattern, as on a fabric, in which a figure or group is duplicated in reverse order on the opposite side of a centerline.
  • downward closed — closure
  • dr. strangelove — a person, especially a military or government official, who advocates initiating nuclear warfare.
  • draft-mule work — drudgery
  • dramaturgically — the craft or the techniques of dramatic composition.
  • draw oneself up — to assume a straighter posture; stand or sit straight
  • dress rehearsal — a rehearsal of a play or other performance in costume and with scenery, properties, and lights arranged and operated as for a performance: often the final rehearsal.
  • drilling jacket — A drilling jacket is a small steel platform used for drilling wells in shallow and calm water.
  • drop handlebars — aerodynamic handlebars that drop down and curve towards the rider at the ends rather than turning upwards as on conventional bicycles
  • dryland farming — a mode of farming, practiced in regions of slight or insufficient rainfall, that relies mainly on tillage methods rendering the soil more receptive of moisture and on the selection of suitable crops.
  • 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
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