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

  • hammer and sickle — the emblem of the Soviet Union, adopted in 1923 and consisting of an insignia of a hammer with its handle across the blade of a sickle and a star above.
  • hammered dulcimer — dulcimer (sense 1)
  • hard rock geology — (loosely) of or relating to igneous or metamorphic rocks, as in mining (hard-rock mining) and geology (hard-rock geology)
  • hard-shelled clam — quahog
  • hard-shelled crab — a crab, esp. an edible sea crab, before it has shed its hard shell
  • hardware platform — a group of compatible computers that can run the same software.
  • haroun-al-raschid — Harun al-Rashid.
  • headline-grabbing — A headline-grabbing statement or activity is one that is intended to attract a lot of attention, especially from the media.
  • henry cabot lodge — Henry Cabot, 1850–1924, U.S. public servant and author: senator 1893–1924.
  • heterochlamydeous — (of a plant) having a perianth consisting of distinct sepals and petals
  • historical method — the process of establishing general facts and principles through attention to chronology and to the evolution or historical course of what is being studied.
  • hold one's breath — If you say that someone is holding their breath, you mean that they are waiting anxiously or excitedly for something to happen.
  • hold sb to ransom — If you say that someone is holding you to ransom in British English, or holding you for ransom in American English, you mean that they are using their power to try to force you to do something which you do not want to do.
  • holding operation — a plan or procedure devised to prolong the existing situation
  • homeland security — national defence
  • household cavalry — (in Britain) cavalry units forming part of the ceremonial guard of the monarch.
  • hydraulic circuit — a circuit through which water or another liquid, instead of electric current, flows, but which otherwise operates in the same way as an electric circuit
  • hydrochloric acid — a colorless or faintly yellow, corrosive, fuming liquid, HCl, used chiefly in chemical and industrial processes.
  • hydroelectrically — Using hydroelectric power.
  • hydrofluoric acid — a colorless, fuming, corrosive liquid, HF, an aqueous solution of hydrogen fluoride, used chiefly for etching glass.
  • hydrofluorocarbon — Any of a class of partly chlorinated and fluorinated hydrocarbons, used as an alternative to chlorofluorocarbons in foam production, refrigeration, and other processes.
  • hydrotherapy pool — a pool of water used for hydrotherapy
  • hydrothermal vent — an opening on the floor of the sea from which hot, mineral-rich solutions issue. Compare vent1 (def 2).
  • hypochlorous acid — a weak, unstable acid, HOCl, existing only in solution and in the form of its salts, used as a bleaching agent and disinfectant.
  • hypochondriacally — In a hypochondriacal manner.
  • ideogrammatically — In terms of, or by means of, ideograms.
  • idiosyncratically — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
  • illegal procedure — a penalty assessed against the offensive team for a technical rules violation, as in assuming an illegal formation.
  • in broad daylight — openly, in full public view
  • in double harness — in a harness for two animals pulling the same carriage, plow, etc.
  • indecipherability — Quality of being indecipherable.
  • indescribableness — The quality of being indescribable.
  • industrial action — job action.
  • industrial design — the art that deals with the design problems of manufactured objects, including problems of designing such objects with consideration for available materials and means of production, of designing packages, bottles, etc., for manufactured goods, and of graphic design for manufactured objects, packages, etc.
  • industrial estate — industrial park.
  • industrial injury — an injury sustained by an employee of an industrial company during the course of their work
  • industrial school — a school for teaching one or more branches of industry; trade or vocational school.
  • industrial unrest — business: among employees
  • industrialisation — Alternative spelling of industrialization.
  • industrialization — the large-scale introduction of manufacturing, advanced technical enterprises, and other productive economic activity into an area, society, country, etc.
  • inertial guidance — a guidance system for an aerospace vehicle, in which self-contained devices determine the vehicle's course on the basis of the directions and magnitudes of the accelerations it undergoes in flight.
  • integrated school — (in New Zealand) a private or church school that has joined the state school system
  • interdental brush — a small brush that is used to clean between the teeth
  • interdepartmental — involving or existing between two or more departments: interdepartmental rivalry.
  • interdisciplinary — combining or involving two or more academic disciplines or fields of study: The economics and history departments are offering an interdisciplinary seminar on Asia.
  • internal medicine — the branch of medicine dealing with the diagnosis and nonsurgical treatment of diseases, especially of internal organ systems.
  • internationalized — Simple past tense and past participle of internationalize.
  • interrupt handler — (software)   A routine which is executed when an interrupt occurs. Interrupt handlers typically deal with low-level events in the hardware of a computer system such as a character arriving at a serial port or a tick of a real-time clock. Special care is required when writing an interrupt handler to ensure that either the interrupt which triggered the handler's execution is masked out (inhibitted) until the handler exits, or the handler is re-entrant so that multiple concurrent invocations will not interfere with each other. If interrupts are masked then the handler must execute as quickly as possible so that important events are not missed. This is often arranged by splitting the processing associated with the event into "upper" and "lower" halves. The lower part is the interrupt handler which masks out further interrupts as required, checks that the appropriate event has occurred (this may be necessary if several events share the same interrupt), services the interrupt, e.g. by reading a character from a UART and writing it to a queue, and re-enabling interrupts. The upper half executes as part of a user process. It waits until the interrupt handler has run. Normally the operating system is responsible for reactivating a process which is waiting for some low-level event. It detects this by a shared flag or by inspecting a shared queue or by some other synchronisation mechanism. It is important that the upper and lower halves do not interfere if an interrupt occurs during the execution of upper half code. This is usually ensured by disabling interrupts during critical sections of code such as removing a character from a queue.
  • intradepartmental — Within a department.
  • invincible armada — Armada.
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