24-letter words containing r, h, a, e, t, i
- graduated pension scheme — (between 1961 and 1975) an earnings-related pension scheme which was based on the amount of an employee's National Insurance contributions
- grand unification theory — a possible future quantum field theory that would encompass both the electroweak theory and quantum chromodynamics. Abbreviation: GUT.
- graphical user interface — a software interface designed to standardize and simplify the use of computer programs, as by using a mouse to manipulate text and images on a display screen featuring icons, windows, and menus.
- greater london authority — local government body of UK capital
- grin like a cheshire cat — a constantly grinning cat in Lewis Carroll's Alice's Adventures in Wonderland.
- hairdressing appointment — an appointment to have your hair cut, styled, coloured, etc, at a hairdresser
- have a finger in the pie — any of the terminal members of the hand, especially one other than the thumb.
- have a tiger by the tail — to find oneself in a situation that has turned out to be much more difficult to control than one had expected
- have at one's fingertips — to have available for instant use
- have one's head straight — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
- heart in the right place — If you say that someone's heart is in the right place, you mean that they are kind, considerate, and generous, although you may disapprove of other aspects of their character.
- heart is a lonely hunter — a novel (1940) by Carson McCullers.
- hierarchical data format — (file format, data) (HDF) A library and multi-object file format for the transfer of graphical and numerical data between computeres. The freely available HDF distribution consists of the library, command line utilities, test suite source, Java interface, and the Java-based HDF Viewer (JHV). HDF supports several different data models, including multidimensional arrays, raster images, and tables. Each defines a specific aggregate data type and provides an API for reading, writing, and organising the data and metadata. New data models can be added by the HDF developers or users. HDF is self-describing, allowing an application to interpret the structure and contents of a file without any outside information. One HDF file can hold a mixture of related objects which can be accessed as a group or as individual objects. Users can create their own grouping structures called "vgroups". HDF files can be shared across most common platforms, including many workstations and high performance computers. An HDF file created on one computer can be read on a different system without modification.
- hierarchical file system — (file system) A file system in which the files are organised into a hierarchy. The nodes of the hierarchy are called directories while the leaves are the files themselves. See also root directory. Compare flat file system.
- high bypass ratio engine — a type of by-pass engine in which a large fan driven by a turbine and housed in a short duct forces air rearwards around the exhaust gases in order to increase the propulsive thrust
- high performance fortran — (language) (HPF) A data parallel language extension to Fortran 90 which provides a portable programming interface for a wide variety of target platforms. The original HPF language specification was produced by the High Performance Fortran Forum, a broad consortium of industry and academia, which met regularly throughout 1992 and early 1993. HPF compilers are now available on most commonly-used computing systems, and users are beginning to gain first hand experience with this language. The Forum has continued to meet in order to address advanced topics.
- high performance routing — (networking) (HPR) Routing designed to work in conjunction with APPN Intermediate Session Routing (ISR) network nodes. HPR nodes perform many of the same functions as ISR nodes. For example, HPR nodes use the same method of calculating routes based on the Topology Routing Service database and class of service tables. HPR nodes also supports such APPN features as connection networks and support for parallel transmission groups (TGs). In the HPR architecture, both partner nodes must support HPR for RTP connections to take place between the nodes. If one node supports HPR and the partner node does not, then the link will support ISR functionality only.
- homolographic projection — an equal-area projection in which the proportion between regions of unequal area is correctly shown.
- hoop-petticoat narcissus — petticoat narcissus.
- house of representatives — the lower legislative branch in many national and state bicameral governing bodies, as in the United States, Mexico, and Japan.
- human-computer interface — (software, hardware) (HCI) Any software or hardware that allows a user to interact with a computer. Examples are WIMP, command-line interpreter, or virtual reality. See also Human-Computer Interaction.
- hyperbetalipoproteinemia — An abnormally high level of betalipoprotein in the blood.
- ichthyophthirius-disease — ich.
- in one's heart of hearts — Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.
- incomplete metamorphosis — insect development, as in the grasshopper and cricket, in which the change is gradual and characterized by the absence of a pupal stage. Compare complete metamorphosis.
- information architecture — the design and organization of an online resource, usually with regard to usability.
- information superhighway — internet
- instructional technology — (education) Design, development, use, management and evaluation of process and resources for learning. Instructional technology aims to promote the application of validated, practical procedures in the design and delivery of instruction. It is often defined either in terms of media and other technology used (e.g. audiovisual media and equipment and computers), or in terms of a systematic process which encompasses instructional design, development, delivery and evaluation.
- involuntary manslaughter — the unlawful but unintentional killing of a human being
- jewish autonomous region — an autonomous region in the Khabarovsk territory of the Russian Federation in E Siberia. 13,900 sq. mi. (36,000 sq. km). Capital: Birobidzhan.
- kinetic theory of matter — a theory that matter is composed of small particles, all in random motion.
- knowledge sharing effort — (project) An ARPA project developing techniques and methods for building large-scale knowledge bases which are sharable and reusable.
- lady washington geranium — show geranium.
- laryngotracheobronchitis — A respiratory disease, a form of croup.
- le chatelier's principle — the principle that if a system in chemical equilibrium is subjected to a disturbance it tends to change in a way that opposes this disturbance
- leave much to be desired — be inadequate
- like a fish out of water — out of place, out of one's element
- lithium aluminum hydride — a white powder, LiAlH 4 , used chiefly as a chemical reducing agent, especially in pharmaceutical and perfume manufacturing.
- mach interface generator — (tool, programming) (MIG) An implementation of a subset of Matchmaker that generates C and C++ remote procedure call interfaces for interprocess communication between Mach tasks.
- macintosh user interface — (operating system) The graphical user interface used by Apple Computer's Macintosh family of personal computers, based on graphical representations of familiar office objects (sheets of paper, files, wastepaper bin, etc.) positioned on a two-dimensional "desktop" workspace. Programs and data files are represented on screen by small pictures (icons). An object is selected by moving a mouse over the real desktop which correspondingly moves the pointer on screen. When the pointer is over an icon on screen, the icon is selected by pressing the button on the mouse. A hierarchical file system is provided that lets a user "drag" a document (a file) icon into and out of a folder (directory) icon. Folders can also contain other folders and so on. To delete a document, its icon is dragged into a trash can icon. For people that are not computer enthusiasts, managing files on the Macintosh is easier than using the MS-DOS or Unix command-line interpreter. The Macintosh always displays a row of menu titles at the top of the screen. When a mouse button is pressed over a title, a pull-down menu appears below it. With the mouse button held down, the option within the menu is selected by pointing to it and then releasing the button. Unlike the IBM PC, which, prior to Microsoft Windows had no standard graphical user interface, Macintosh developers almost always conform to the Macintosh interface. As a result, users are comfortable with the interface of a new program from the start even if it takes a while to learn all the rest of it. They know there will be a row of menu options at the top of the screen, and basic tasks are always performed in the same way. Apple also keeps technical jargon down to a minimum. Although the Macintosh user interface provides consistency; it does not make up for an application program that is not designed well. Not only must the application's menus be clear and understandable, but the locations on screen that a user points to must be considered. Since the mouse is the major selecting method on a Macintosh, mouse movement should be kept to a minimum. In addition, for experienced typists, the mouse is a cumbersome substitute for well-designed keyboard commands, especially for intensive text editing.
- magnetothermoelectricity — thermoelectricity induced or affected by a magnetic field.
- maker interchange format — (MIF) A language used to describe a FrameMaker document in a text file. MIF is used to exchange information between FrameMaker and other applications.
- mathematical probability — the probability of an event consisting of n out of m possible equally likely occurrences, defined to be n/m
- mediterranean flour moth — a small cosmopolitan moth, Anagasta kuehniella, whose larvae damage stored foodstuffs, as grain and flour.
- national weather service — an agency of the National Oceanic and Atmospheric Administration that is responsible for meteorological observations, weather forecasts, storm and flood warnings, etc.
- neutrosophic probability — (logic) An extended form of probability based on Neutrosophy, in which a statement is held to be t true, i indeterminate, and f false, where t, i, f are real values from the ranges T, I, F, with no restriction on T, I, F or the sum n=t+i+f.
- newton-raphson iteration — (algorithm) An iterative algorithm for solving equations. Given an equation, f x = 0 and an initial approximation, x(0), a better approximation is given by: x(i+1) = x(i) - f(x(i)) / f'(x(i)) where f'(x) is the first derivative of f, df/dx. Newton-Raphson iteration is an example of an anytime algorithm in that each approximation is no worse than the previous one.
- nongonococcal urethritis — a widespread sexually transmitted infection of the urethra, caused by the parasite Chlamydia trachomatis, or the mycoplasm Ureaplasma urealyticum, characterized in males by painful urination and discharge from the penis and in females by frequent, painful urination and cervical erosion. Abbreviation: NGU.
- north equatorial current — a westward-flowing ocean current occurring N of the equator in the Atlantic and Pacific oceans.
- northern mariana islands — a US commonwealth territory in the N Pacific, formerly part of the Trust Territory of the Pacific Islands (1947–87). Capital: Saipan island (Capitol Hill). Pop: 51 170 (2013 est). Area: 477 sq km (184 sq miles)