Glossary

Find Definition by Term and/or Language

Browse All Terms

Beginning With:
3 | 5 | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z :: All
  • HDD

    Hard Disk Drive
  • HDL

    High-Density Lipoprotein
  • HDMA

    Healthcare Distribution Management Association (United States)
  • HDPE

    High-Density Polyethylene
  • HDS

    Hydrostatic Design Stress
  • HDS

    Hardware Design Specification
  • Health Care

    Care, services, and supplies related to the health of an individual. Health care includes preventive, diagnostic, therapeutic, rehabilitative, maintenance, or palliative care, and counseling, among other services. Health care also includes the sale and dispensing of prescription drugs or devices.
  • Health Care Clearinghouse

    An entity that standardizes health information (e.g., a billing service that processes or facilitates the processing of data from one format into a standardized billing format).
  • Health Care Operations

    Institutional activities that are necessary to maintain and monitor the operations of the institution. Examples include but are not limited to: conducting quality assessment and improvement activities; developing clinical guidelines; case management; reviewing the competence or qualifications of health care professionals; education and training of students, trainees and practitioners; fraud and abuse programs; business planning and management; and customer service. Under the HIPAA Privacy Rule, these are allowable uses and disclosures of identifiable information "without specific authorization." Research is not considered part of health care operations.
  • Health Care Provider

    Providers of medical or health care. Researchers who provide health care are health care providers.
  • Health Hazard

    (OSHA) Classification of a chemical for which there is statistically significant evidence based on at least one study conducted in accordance with established scientific principles that acute or chronic health effects may occur in exposed employees.NOTE: The term “health hazard” includes chemicals that are carcinogens, toxic or highly toxic agents, reproductive toxins, irritants, corrosives, sensitizers, hepatotoxins, nephrotoxins, neurotoxins, agents that act on the hematopoietic system, and agents that damage the lungs, skin, eyes or mucous membranes.
  • Health Hazard

    Classification of a chemical for which there is statistically significant data that acute or chronic health effects may occur in exposed persons. Includes: cardiovascular toxins, carcinogens, toxic or highly toxic, developmental, and reproductive toxins, immunotoxic agents, hepatotoxins, nephrotoxins, and neurotoxins.
  • Health Information

    Information in any form (oral, written or otherwise) that relates to the past, present or future physical or mental health of an individual. That information could be created or received by a health care provider, a health plan, a public health authority, an employer, a life insurer, a school or university or a health care clearinghouse.
  • Health Oversight Agency

    A person or entity at any level of the federal, state, local or tribal government that oversees the health care system or requires health information to determine eligibility or compliance or to enforce civil rights laws.
  • Heat

    A form of energy associated with the motion of atoms or molecules in solids and capable of being transmitted through solid and fluid media by conduction, through fluid media by convection, and through empty space by radiation. Two important characteristics of heat are:1.Heat cannot be destroyed, only transferred from on body to another, or converted to another form of energy.2.Heat always flows from the warmer to the colder substance.
  • Heat Affected Zone (HAZ)

    That portion of the base metal that has not been melted, but whose microstructure or mechanical properties have been altered by the heat of welding or cutting.
  • Heat Island Effect

    An urban area having higher average temperature than its rural surroundings owing to the greater absorption, retention, and generation of heat by its buildings, pavements, and human activities.
  • Heat Labile

    Able to be destroyed or altered by high temperature. Heat labile pharmaceuticals are sterilized by filtration.
  • Heat Number

    An alphanumeric identification of a stated tonnage of metal, obtained from a continuous melting in a furnace.
  • Heat of Steel

    The product of a single melting operation in a furnace, starting with the charging of raw materials and ending with the tapping of molten metal and consequently identical in its characteristics.
  • Heat of Vaporization

    The amount of heat needed to change a unit volume from a liquid to a vapor at a given pressure without a temperature change.
  • Heat Tint

    Coloration of a metal surface through oxidation by heating.
  • Heavy Metals

    High molecular weight metal ions, such as lead. Known for their interference with many processes, and “poisoning” of catalysts, membranes, and resins.
  • Height Equivalent to Theoretical Plate (HETP) Testing

    The column length divided by a theoretical plate number.
  • HEL

    Human Embryonal Lung cells