Glossary · MWE Terms · H
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TermTypeDefinitionClassificationsUpdated
Hybrid PetunianounMWEhybrids of Petunia axillaris and Petunia integrifolia: a complex group of petunias having single or double flowers in colors from white to purpleverified
Hybrid Security ControlnounMWEA security control that is implemented in an information system in part as a common control and in part as a system-specific control. See also Common Control and System-Specific Security Control.verified
Hybrid VigornounMWE(genetics) the tendency of a crossbred organism to have qualities superior to those of either parentverified
Hydnocarpus OilnounMWEoil from seeds of trees of the genus Hydnocarpus especially Hydnocarpus wightiana (Hydnocarpus laurifolia)verified
Hydrated Aluminium OxidenounMWEwhite crystalline compound that occurs naturally as the mineral gibbsiteverified
Hydrated Aluminum OxidenounMWEwhite crystalline compound that occurs naturally as the mineral gibbsiteverified
Hydraulic BrakenounMWEbrake system in which a brake pedal moves a piston in the master cylinderverified
Hydraulic Brake CylindernounMWEa cylinder that contains brake fluid that is compressed by a pistonverified
Hydraulic EngineeringnounMWEthe branch of civil engineering dealing with the use and control of water in motionverified
Hydraulic PressnounMWEpress in which a force applied by a piston to a small area is transmitted through water to another piston having a large areaverified
Hydraulic PumpnounMWEa water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher levelverified
Hydraulic RamnounMWEa water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher levelverified
Hydraulic SystemnounMWEa mechanism operated by the resistance offered or the pressure transmitted when a liquid is forced through a small opening or tubeverified
Hydrazoic AcidnounMWEa colorless explosive liquid that is volatile and poisonous and foul-smellingverified
Hydroelectric TurbinenounMWEturbine consisting of a large and efficient version of a water wheel used to drive an electric generatorverified
Hydrofluosilicic AcidnounMWEan unstable poisonous corrosive acid known primarily in the form of its saltsverified
Hydrogen AzidenounMWEa colorless explosive liquid that is volatile and poisonous and foul-smellingverified
Hydrogen BombnounMWEa nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form heliumverified
Hydrogen BondnounMWEa chemical bond consisting of a hydrogen atom between two electronegative atoms (e.g., oxygen or nitrogen) with one side be a covalent bond and the other being an ionic bondverified
Hydrogen CarbonatenounMWEa salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replacedverified
Hydrogen CyanidenounMWEa highly poisonous gas or volatile liquid that smells like bitter almondsverified
Hydrogen FluoridenounMWEa colorless poisonous corrosive liquid made by the action of sulphuric acid on calcium fluorideverified
Hydromorphone HydrochloridenounMWEa narcotic analgesic (trade name Dilaudid) used to treat moderate to severe painverified
Hydrophytic PlantnounMWEa plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinthverified
Hydrostatic HeadnounMWEthe pressure at a given point in a liquid measured in terms of the vertical height of a column of the liquid needed to produce the same pressureverified
Hydroxy AcidnounMWEany acid that has hydroxyl groups in addition to the hydroxyl group in the acid itselfverified
Hydroxyacetic AcidnounMWEa translucent crystalline compound found in sugar cane and sugar beets and unripe grapesverified
Hydroxyl GroupnounMWEthe monovalent group -OH in such compounds as bases and some acids and alcoholsverified
Hydroxyl RadicalnounMWEthe monovalent group -OH in such compounds as bases and some acids and alcoholsverified
Hydroxyzine HydrochloridenounMWEa drug (trade names Atarax and Vistaril) used as a tranquilizer to treat anxiety and motion sicknessverified
Hyena DognounMWEa powerful doglike mammal of southern and eastern Africa that hunts in large packsverified
Hymenopterous InsectnounMWEinsects having two pairs of membranous wings and an ovipositor specialized for stinging or piercingverified
Hyperbaric ChambernounMWEa large chamber in which the oxygen pressure is above normal for the atmosphereverified
Hyperbilirubinemia of the NewbornnounMWEa common disorder that is usually due to immaturity of the liververified
Hyperbolic GeometrynounMWEin mathematics, a non-Euclidean geometry in which the parallel axiom is replaced by the assumption that through any point in a plane there are two or more lines that do not intersect a given line in the planeverified
Hyperchromic AnaemianounMWEanemia characterized by an increase in the concentration of corpuscular hemoglobinverified
Hyperchromic AnemianounMWEanemia characterized by an increase in the concentration of corpuscular hemoglobinverified
Hyperfocal DistancenounMWEthe distance in front of a lens that is focused at infinity beyond which all objects are well defined and clearverified
Hyperkinetic SyndromenounMWEa condition (mostly in boys) characterized by behavioral and learning disordersverified
Hypermedia SystemnounMWEa multimedia system in which related items of information are connected and can be presented togetherverified
Hypersensitivity ReactionnounMWEan inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods)verified
Hypertext Markup LanguagenounMWEThe set of markup symbols or codes inserted in a file intended for display on a World Wide Web browser page.verified
Hypertext Markup Language (HTML)nounMWEA set of codes that can be inserted into text files to indicate special typefaces, inserted images, and links to other hypertext documents.verified
Hypertext SystemnounMWEa database management system that allows strings of text (`objects') to be processed as a complex network of nodes that are linked together in an arbitrary wayverified
Hypertext Transfer ProtocolnounMWEA communication protocol used to connect to servers on the World Wide Web. Its primary function is to establish a connection with a web server and transmit hypertext markup language (HTML), extensible markup language (XML) or other pages to client browserscandidate
Hypertext Transfer Protocol SecurenounMWEA protocol for accessing a secure web server, whereby all data transferred are encrypted.verified
Hypertrophic CardiomyopathynounMWEa disorder in which the heart muscle is so strong that it does not relax enough to fill with the heart with blood and so has reduced pumping abilityverified
Hypertrophic RosaceanounMWEenlargement of the nose with dilation of follicles and redness and prominent vascularity of the skinverified
Hypochromic AnaemianounMWEanemia characterized by a decrease in the concentration of corpuscular hemoglobinverified
Hypochromic AnemianounMWEanemia characterized by a decrease in the concentration of corpuscular hemoglobinverified
Hypodermic SyringenounMWEa piston syringe that is fitted with a hypodermic needle for giving injectionsverified
Hypogastric ArterynounMWEthe inner branch of the common iliac artery on either side of the bodyverified
Hypogastric VeinnounMWEa vein that unites with the external iliac vein to form the common iliac veinverified
Hypoglycemic AgentnounMWEany of various agents that decrease the level of glucose in the blood and are used in the treatment of diabetes mellitusverified
Hypophyseal StalknounMWEthe funnel-shaped stalk connecting the pituitary gland to the hypothalamusverified
Hypophysial DwarfnounMWEa dwarf whose condition is caused by a deficiency of growth hormones, rather than by genetic factors (as in the case of the achondroplastic dwarf)verified
Hypoplastic DwarfnounMWEan achondroplastic dwarf whose small size is the result of a genetic defectverified