24-letter words containing h, e, a

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
hardware circular buffer — (programming, hardware) digital signal processors which support hardware circular buffers automatically generate and increment pointers for memory accesses which wrap to the beginning of the buffer when its end is reached, thus saving the time and instructions otherwise needed to ensure that the address pointer stays within the boundary of the buffer, and speeding the execution of repetitive DSP algorithms.
have (got) sth on the go — If you have something on the go, you have started it and are busy doing it.
have (or get) cold feet — to be (or become) timid or fearful
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 ants in one's pants — any of numerous black, red, brown, or yellow social insects of the family Formicidae, of worldwide distribution especially in warm climates, having a large head with inner jaws for chewing and outer jaws for carrying and digging, and living in highly organized colonies containing wingless female workers, a winged queen, and, during breeding seasons, winged males, some species being noted for engaging in warfare, slavemaking, or the cultivation of food sources.
have at one's fingertips — to have available for instant use
have carnal knowledge of — to have sexual intercourse with
have had a drop too much — to be drunk
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.
have sth up one's sleeve — If you have something up your sleeve, you have an idea or plan which you have not told anyone about. You can also say that someone has an ace, card, or trick up their sleeve.
have the drop on someone — to have the advantage over someone
have your eye on someone — If someone has their eye on you, they are watching you carefully to see what you do.
head and shoulders above — vastly superior to
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.
hexaethyl tetraphosphate — a yellow, very poisonous liquid, (C 2 H 5 O) 6 P 4 O 7 , soluble in water, used as an insecticide.
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.
hit the nail on the head — a slender, typically rod-shaped rigid piece of metal, usually in any of numerous standard lengths from a fraction of an inch to several inches and having one end pointed and the other enlarged and flattened, for hammering into or through wood, other building materials, etc., as used in building, in fastening, or in holding separate pieces together.
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 potential movement — a movement in psychology that includes group therapy, encounter therapy, primal therapy, etc., is based mainly on Freudian and Gestalt psychology, and is aimed at self-realization
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.
hyaline membrane disease — respiratory distress syndrome.
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
involutional melancholia — (formerly) extreme depression related to menopause or, less frequently, the male climacteric.
jewish american princess — JAP.
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.
kennelly-heaviside layer — E layer.
kinetic theory of matter — a theory that matter is composed of small particles, all in random motion.
knock one's head against — to have a violent or unpleasant encounter with (adverse facts or circumstances)
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.
land of the midnight sun — any of those countries containing land within the Arctic Circle where there is a midnight sun in midsummer, especially Norway, Sweden, or Finland.
laryngotracheobronchitis — A respiratory disease, a form of croup.
laugh in a person's face — to show open contempt or defiance towards a person

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