19-letter words containing h, i

hairy cell leukemia — a form of cancer in which abnormal cells with many hairlike cytoplasmic projections appear in the bone marrow, liver, spleen, and blood.
half wave rectifier — A half wave rectifier removes the negative component of an alternating signal leaving only the positive part.
half-wave rectifier — a rectifier that changes only one half of a cycle of alternating current into a pulsating, direct current.
halt and catch fire — (humour, processor) (HCF) Any of several undocumented and semi-mythical machine instructions with destructive side-effects, supposedly included for test purposes on several well-known architectures going as far back as the IBM 360. The Motorola 6800 microprocessor was the first for which an HCF opcode became widely known. This instruction caused the processor to read every memory location sequentially until reset.
hamiltonian problem — (computability) (Or "Hamilton's problem") A problem in graph theory posed by William Hamilton: given a graph, is there a path through the graph which visits each vertex precisely once (a "Hamiltonian path")? Is there a Hamiltonian path which ends up where it started (a "Hamiltonian cycle" or "Hamiltonian tour")? Hamilton's problem is NP-complete. It has numerous applications, sometimes completely unexpected, in computing.
hang five (or ten) — to ride a surfboard with the toes of one (or both) feet draped over the front edge of the board
hang in the balance — to fasten or attach (a thing) so that it is supported only from above or at a point near its own top; suspend.
hang on the lips of — to listen to with close attention
hanging indentation — a style of text-setting in which the first line of a paragraph is set to the full measure and subsequent lines are indented at the left-hand side
harbinger-of-spring — a North American umbelliferous herb, Erigenia bulbosa, having white flowers that bloom early in the spring.
harmonic distortion — distortion caused by nonlinear characteristics of electronic apparatus, esp of audio amplifiers, that generate unwanted harmonics of the input frequencies
hatfield-mccoy feud — a blood feud between two mountain clans on the West Virginia–Kentucky border, the Hatfields of West Virginia and the McCoys of Kentucky, that grew out of their being on opposite sides during the Civil War and was especially violent during 1880–90.
haute vulgarisation — vulgarization, or popularization, on a higher level, esp. as done by academics, scholars, etc.
have a bone to pick — to have grounds for a quarrel
have a good mind to — (in a human or other conscious being) the element, part, substance, or process that reasons, thinks, feels, wills, perceives, judges, etc.: the processes of the human mind.
have a problem with — to be unable to understand or do
have an ax to grind — an instrument with a bladed head on a handle or helve, used for hewing, cleaving, chopping, etc.
have designs on sth — If someone has designs on something, they want it and are planning to get it, often in a dishonest way.
have half a mind to — to have the intention of
have one's way with — manner, mode, or fashion: a new way of looking at a matter; to reply in a polite way.
have sth against sb — If you have something against someone or something, you dislike them.
have the makings of — show potential as
head-and-tail light — a small South American characin fish, Hemmigrammus ocellifer, having shiny red eyes and tail spots, often kept in aquariums.
health professional — a person trained to work in any field of physical or mental health.
heart in your mouth — If your heart is in your mouth, you feel very excited, worried, or frightened.
heat of sublimation — the heat absorbed by one gram or unit mass of a substance in the process of changing, at a constant temperature and pressure, from a solid to a gaseous state. Compare sublime (def 10).
heavy goods vehicle — a large road vehicle for carrying goods
heel-and-toe racing — race walking.
heine-borel theorem — the theorem that in a metric space every covering consisting of open sets that covers a closed and compact set has a finite collection of subsets that covers the given set.
heinrich schliemann — Heinrich [hahyn-rikh] /ˈhaɪn rɪx/ (Show IPA), 1822–90, German archaeologist: excavated ancient cities of Troy and Mycenae.
helsinki conference — Conference on Security and Cooperation in Europe.
hemidemisemiquavers — Plural form of hemidemisemiquaver.
henry david thoreau — Henry David, 1817–62, U.S. naturalist and author.
henry the navigator — Prince, 1394–1460, prince of Portugal.
hepatic portal vein — a vein connecting two capillary networks in the liver
heptachlorobiphenyl — (organic compound) Either of twenty-four isomers of the polychlorinated biphenyl containing seven chlorine atoms.
hermes trismegistus — a name variously ascribed by Neoplatonists and others to an Egyptian priest or to the Egyptian god Thoth, to some extent identified with the Grecian Hermes: various mystical, religious, philosophical, astrological, and alchemical writings were ascribed to him.
hermetically sealed — airtight
hermitian conjugate — adjoint (def 2).
herpes zoster virus — a type of herpesvirus that causes chickenpox and shingles.
hester lynch piozzi — Hester Lynch (Hester Lynch Piozzi) 1741–1821, Welsh writer and friend of Samuel Johnson.
hexafluoroplatinate — (chemistry) The univalent anion PtF6- prepared by reacting platinum hexafluoride with certain metals or other elements.
hick-joint pointing — pointing having raked joints filled flush with the face of the masonry with a finish mortar.
high blood pressure — elevation of the arterial blood pressure or a condition resulting from it; hypertension. Abbreviation: HBP.
high-bush cranberry — cranberry bush
high-energy physics — the branch of particle physics that deals with the collisions of particles accelerated to such high energies that new elementary particles are created by the collisions.
high-flying tippler — a variety of domestic pigeon bred mainly for flying
high-level language — a problem-oriented programming language, as COBOL, FORTRAN, or PL/1, that uses English-like statements and symbols to create sequences of computer instructions and identify memory locations, rather than the machine-specific individual instruction codes and numerical addresses employed by machine language.
high-pressure steam — High-pressure steam is steam which is at or above 75 pounds per square inch gauge pressure.
highland clearances — in Scotland, the removal, often by force, of the people from some parts of the Highlands to make way for sheep, during the eighteenth and nineteenth centuries

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