ExpertGlossary terms starting with H

1,452 terms

  1. Headwater Basin A basin at the headwaters of a river. All discharge of the river at this point is developed within the basin.
  2. Headwaters Streams at the source of a river.
  3. healing touch A form of complementary and alternative medicine based on the belief that a vital energy flows through the human body.
  4. Health Health services, human ecology, and safety. For example, resources describing human disease and illness, factors affecting health, hygiene, mental and…
  5. Health and Status (H&S) Health and Status pertains to a units ability to assess the conditions of its subsystem functions.
  6. Health Care for the Homeless Health Center A grantee funded under section 330(h) of the Public Health Service Act to provide primary health and related services to homeless individuals.
  7. Health Care Team A support group of health-care professionals who helps persons manage diabetes.
  8. Health Care Workforce Incentive The use of incentives and recruiting to encourage people to enter into health care professions like primary care and to encourage providers to practice in…
  9. Health Centers Community-based and patient-directed organizations that serve populations with limited access to health care.
  10. health certificate An X.509 certificate that asserts the health of a client computer. Client computers can use this certificate to prove their identities and health through…
  11. Health Certificate Enrollment Protocol The protocol used by the NAP agent to request health certificates from the Health Registration Authority (HRA) and to prove the health of a client…
  12. health check A system call to check on the health status of each instance in an Auto Scaling group.
  13. Health Coverage Legal entitlement to payment or reimbursement for your health care costs, generally under a contract with a health insurance company, a group health plan…
  14. Health History A regularly updated record of a person's past and present health status.
  15. Health Insurance Health insurance covers some or all of the cost of treating an insured person's illnesses or injuries.
  16. Health Insurance Continuity Program (HICP) A program primarily under Part B of the Ryan White HIV/AIDS Program that makes premium payments, co-payments, deductibles, and/or risk pool payments on…
  17. Health Insurance Marketplace A resource where individuals, families, and small businesses can: learn about their health coverage options; compare health insurance plans based on…
  18. Health Literacy How well a person understands and acts on healthcare decisions.
  19. Health Maintenance Organization If you select a Health Maintenance Organization (HMO), you will need to choose a primary care doctor or one will be appointed to you.
  20. Health Maintenance Organization (HMO) A type of health insurance plan that usually limits coverage to care from doctors who work for or contract with the HMO.
  21. Health physics That science devoted to recognition, evaluation, and control of all health hazards from ionizing radiation.
  22. Health Plan Categories Plans in the Marketplace are primarily separated into 4 health plan categories — Bronze, Silver, Gold, or Platinum — based on the percentage the plan…
  23. health policy A collection of software requirements, security update requirements, and required configuration settings for NAP client computers.
  24. Health Registration Authority A component of Network Access Protection (NAP) that validates statements of health (SoHs) and approves the issuance of a health certificate to clients…
  25. Health Reimbursement Account (HRA) Health Reimbursement Accounts (HRAs) are employer-funded group health plans from which employees are reimbursed tax-free for qualified medical expenses up…
  26. health requirement server A software component that communicates with a Network Policy Server (NPS) and provides information that system health agents (SHAs) use to validate…
  27. Health Resources and Services Administration (HRSA) The agency of the U.S. Department of Health and Human Services that administers various primary care programs for the medically underserved, including the…
  28. Health Resources Services Agency (HRSA) A division of Department of Health and Human Services.
  29. Health Savings Account (HSA) A health savings account is designed to accumulate tax-free assets to pay current and future healthcare expenses.
  30. Health Status Refers to your medical conditions (both physical and mental health), claims experience, receipt of health care, medical history, genetic information…
  31. Health Status Rating Varying premiums based on health status. Though Minnesota statutes do not currently require health plans to issue coverage in the individual market on a…
  32. Healthcare Associated Infection An infection that develops during or soon after care in a hospital, clinic, or doctor’s office, or after a home-visit by a health professional.
  33. Healthcare Infection Control Practices Advisory Committee (HICPAC) An expert panel in a specific field who advise the CDC on matters of healthcare associated infection, surveillance, control and prevention.
  34. Healthcare provider A person who provides health services, such as, doctor, nurse, dentist, or health educator.
  35. healthcare proxy A type of advance directive that gives a person (such as a relative, lawyer, or friend) the authority to make healthcare decisions for another person.
  36. Healthcare-associated Infection (HAI) Healthcare-associated Infections are infections that patients acquire during the course of receiving treatment for other conditions within a healthcare…
  37. Healthy One of four health states of a storage group copy. Healthy indicates that the passive copy of a storage group can be advanced by log replay.
  38. healthy control In a clinical study, a person who does not have the disorder or disease being studied.
  39. Heap The soil carried above the sides of a body or bucket.
  40. Hearing A formal proceeding (generally less formal than a trial) with issues of law or of fact to be heard.
  41. hearsay Statements by a witness who did not see or hear the incident in question but heard about it from someone else. Hearsay may not be admissible.
  42. Heart Attack Damage to the heart muscle caused when the blood vessels supplying the muscle are blocked, such as when the blood vessels are clogged with fats (a…
  43. heart cancer (hart KAN-ser) A rare cancer that develops in tissues of the heart. Also called cardiac sarcoma.
  44. Heart Disease See Coronary Vascular Disease.
  45. heartbeat A repeating signal transmitted from one appliance to another that indicates that the appliance is in operation.
  46. heartbeat interval The amount of time that can elapse before the Exchange server asks a mobile device running Exchange ActiveSync to connect again. [Exchange 2007]
  47. heartbeat network A network that provides reliable communication among nodes in a cluster, including the transmission of heartbeat messages, signals from each functioning…
  48. Hearthstone An item that can be used once per hour to teleport you to your Home point.
  49. Heat Pressure and intimidation used by a casino to discourage card counters.
  50. Heat Absorbing Window Glass A type of window glass that contains special tints that cause the window to absorb as much as 45% of incoming solar energy, to reduce heat gain in an…
  51. Heat Advisory Issued within 12 hours of the onset of the following conditions: heat index of at least 105°F but less than 115°F for less than 3 hours per day, or…
  52. Heat Balance Energy output from a system that equals energy input.
  53. Heat balance of the Earth-atmosphere system Heat balance of the Earth-atmosphere system The equilibrium that exists on the average between the radiation received by the Earth and atmosphere from the…
  54. Heat budget Heat budget Relation between fluxes of heat into and out of a given region or body and the heat stored by the system.
  55. heat capacity The ratio of the heat absorbed (or released) by a system to the corresponding temperature rise (or fall).
  56. Heat Content The amount of heat in a quantity of matter at a specific temperature and pressure.
  57. Heat cycle Each time a tire is raised to operating temperature.
  58. Heat Engine A device that produces mechanical energy directly from two heat reservoirs of different temperatures.
  59. Heat Exchanger A device used to transfer heat from a fluid (liquid or gas) to another fluid where the two fluids are physically separated.
  60. Heat Exhaustion A mild form of heat stroke, characterized by faintness, dizziness, and heavy sweating.
  61. Heat flux Heat flux Amount of heat, transferred in a liquid, in particular in the atmosphere, per unit of time through a unit area.
  62. Heat Gain The amount of heat introduced to a space from all heat producing sources, such as building occupants, lights, appliances, and from the environment, mainly…
  63. Heat Index The Heat Index (HI) or the "Apparent Temperature" is an accurate measure of how hot it really feels when the Relative Humidity (RH) is added to the actual…
  64. heat index (HI) An index that combines air temperature and relative humidity to determine an apparent temperature-how hot it actually feels.
  65. Heat Lightning Lightning that occurs at a distance such that thunder is no longer audible.
  66. Heat Loss The heat that flows from the building interior, through the building envelope to the outside environment.
  67. Heat Pipe A device that transfers heat by the continuous evaporation and condensation of an internal fluid.
  68. Heat Pump An electricity powered device that extracts available heat from one area (the heat source) and transfers it to another (the heat sink) to either heat or…
  69. Heat Pump Water Heaters A water heater that uses electricity to move heat from one place to another instead of generating heat directly.
  70. Heat rate The ratio of fuel energy input as heat per unit of net work output; a measure of a power plant thermal efficiency, generally expressed as Btu per net…
  71. Heat Recovery Ventilator A device that captures the heat from the exhaust air from a building and transfers it to the supply/fresh air entering the building to preheat the air and…
  72. Heat Register The grilled opening into a room by which the amount of warm air from a furnace can be directed or controlled; may include a damper.
  73. heat shock protein (... PROH-teen) One of a group of proteins that help protect cells from stresses such as heat, cold, and low amounts of oxygen or glucose (sugar).
  74. Heat Sink A structure or media that absorbs heat.
  75. Heat Source A structure or media from which heat can be absorbed or extracted.
  76. Heat Storage A device or media that absorbs heat for storage for later use.
  77. Heat Storage Capacity The amount of heat that a material can absorb and store.
  78. Heat Stroke A condition resulting from excessive exposure to intense heat, characterized by high fever, collapse, and sometimes convulsions or coma.
  79. heat therapy See: thermotherapy.
  80. Heat Transfer The flow of heat from one area to another by conduction, convection, and/or radiation. Heat flows naturally from a warmer to a cooler material or space.
  81. Heat transfer efficiency The useful heat output released to a room divided by the actual heat produced in the firebox.
  82. Heat Transfer Fluid A gas or liquid used to move heat energy from one place to another; a refrigerant.
  83. Heat transfer fluid (HTF) Fluids that transfer heat generated at the solar collectors to a heat exchanger where steam is produced to run a steam generator.
  84. Heat Transmission Coefficient Any coefficient used to calculate heat transmission by conduction, convection, or radiation through materials or structures.
  85. Heat Wave A period of abnormally and uncomfortably hot and unusually humid weather. Typically a heat wave lasts two or more days.
  86. Heater Fuel Exclusion The number of gallons that are exempt form tax due to usage in the heaters. (* Note: This is only calculated when the propulsion engines and propulsion…
  87. Heater Fuel Rate The number of gallons of fuel used by the heaters in an hour. (Note: Does not apply when heaters are electric)
  88. Heating Capacity (Also specific heat) The quantity of heat necessary to raise the temperature of a specific mass of a substance by one degree.
  89. Heating Degree Day(s) (HDD) The number of degrees per day that the daily average temperature (the mean of the maximum and minimum recorded temperatures) is below a base temperature…
  90. Heating Degree Days (abbrev. HDD) A form of degree day used to estimate energy requirements for heating.
  91. Heating degree days (HDD) A measure of heating demand equal to the number of degrees a location’s mean daily temperature was below 65 degrees Fahrenheit.
  92. Heating Fuel Units Standardized weights or volumes for heating fuels.
  93. Heating Fuels Any gaseous, liquid, or solid fuel used for indoor space heating.
  94. Heating Load The rate of heat flow required to maintain a specific indoor temperature; usually measured in Btu per hour.
  95. Heating Season The coldest months of the year; months where average daily temperatures fall below 65 degrees Fahrenheit creating demand for indoor space heating.
  96. Heating Seasonal Performance Factor (HSPF) The measure of seasonal or annual efficiency of a heat pump operating in the heating mode.
  97. Heating Value The amount of heat produced from the complete combustion of a unit of fuel. The higher (or gross) heating value is that when all products of combustion…
  98. Heating, Ventilation, and Air-Conditioning (HVAC) System All the components of the appliance used to condition interior air of a building.
  99. Heave The upward movement of land surfaces or structures due to subsurface expansion of soil or rock, or vertical faulting of rock.
  100. Heavenly Bodies Any mass or object in space, including nebulas, planets, moons, stars, pulsars, quasars and so on.