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15-letter words containing i, d, y

  • guidance system — The guidance system of a missile or rocket is the device which controls its course.
  • gynandromorphic — (of an organism) Having male and female characteristics.
  • hard mint candy — a hardened mint-flavoured sweet
  • hardy perennial — a plant that lasts three seasons or more and that can withstand freezing temperatures
  • has had its day — If you say that something has had its day, you mean that the period during which it was most successful or popular has now passed.
  • have a nice day — pleasantry
  • hay conditioner — either of two machines, one designed to crush stems of hay, the other to break and bend them, in order to cause more rapid and even drying
  • hazard analysis — risk assessment
  • head-up display — an electronic display of data from instruments or other sources projected at eye level so that a driver or pilot sees it without looking away from the road or course. Abbreviation: HUD.
  • heaviside layer — E layer.
  • hemodynamically — With regard to hemodynamics.
  • hendecasyllabic — having 11 syllables.
  • henry cavendish — Henry, 1731–1810, English chemist and physicist.
  • high and mighty — self-important, arrogant
  • high-and-mighty — haughty; arrogant.
  • high-dependency — needing or providing a more than usually high level of healthcare
  • holding company — a company that controls other companies through stock ownership but that usually does not engage directly in their productive operations (distinguished from parent company).
  • holiday clothes — the clothes worn and bought for travelling on holiday, such as swimwear, skiwear, or clothes for hot or cold weather, etc
  • holiday cottage — a cottage used for accommodation for a family, couple, etc, on holiday
  • holiday feeling — the positive feeling people experience while on holiday and during holiday periods such as the Christmas period
  • holiday traffic — increased road traffic during holiday periods and public holidays
  • holiday village — a park with villas where holidaymakers stay and which has a central area with a shop, entertainment, etc
  • holyhead island — former name of Holy Island (def 2).
  • hyaluronic acid — a mucopolysaccharide serving as a viscous medium in the tissues of the body and as a lubricant in joints.
  • hybrid antibody — a synthetic antibody that is able to combine with two different antigens
  • hybrid computer — a computer system containing both analog and digital hardware.
  • hydraulic brake — a brake operated by fluid pressures in cylinders and connecting tubular lines.
  • hydraulic fluid — a fluid, usually of low viscosity, as oil, used in a hydraulic system.
  • hydraulic motor — a motor that converts the kinetic or potential energy of a fluid into mechanical energy.
  • hydraulic press — a machine permitting a small force applied to a small piston to produce, through fluid pressure, a large force on a large piston.
  • hydrobiological — of or relating to hydrobiology
  • hydrodynamicist — a specialist in hydrodynamics.
  • hydrofracturing — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
  • hydrogen iodide — a colorless gas, HI, having a suffocating odor: the anhydride of hydriodic acid.
  • hydromechanical — Of or pertaining to hydromechanics.
  • hydropathically — in a hydropathic manner; in a manner relating to hydropathy
  • hydrostatically — In a hydrostatic manner.
  • hydroxonium ion — a positive ion, H3O+, formed by the attachment of a proton to a water molecule: occurs in solutions of acids and behaves like a hydrogen ion
  • hydroxycoumarin — (organic compound) Any of several isomeric hydroxy derivatives of coumarin, some of which are the basis of pharmaceuticals.
  • hydroxylapatite — Alternative spelling of hydroxyapatite.
  • hyperadrenalism — a glandular disorder caused by the overactivity of the adrenal glands and often resulting in obesity
  • hyperdemocratic — pertaining to or of the nature of democracy or a democracy.
  • hyperfastidious — extremely or excessively fastidious
  • hyperlipidaemia — Alternative spelling of hyperlipidemia.
  • hyperlipoidemia — An abnormally high level of lipoids in the blood.
  • hyperproduction — an increased or excessive production or output
  • hypersensitized — Simple past tense and past participle of hypersensitize.
  • hypersexualised — Simple past tense and past participle of hypersexualise.
  • hypersexualized — Simple past tense and past participle of hypersexualize.
  • hyperthyroidism — overactivity of the thyroid gland.
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