19-letter words containing o, n, t, h
- go under the hammer — to be offered for sale by an auctioneer
- goes without saying — If something goes without saying, it is obvious.
- goldbach conjecture — an unproved theorem that every even integer greater than 2 can be written as the sum of two prime numbers.
- grandfather's clock — a pendulum floor clock having a case as tall as or taller than a person; tall-case clock; long-case clock.
- grandmother's clock — a pendulum clock similar to a grandfather's clock but shorter.
- graphic workstation — (graphics, computer) A workstation specifically configured for graphics works such as image manipulation, bitmap graphics ("paint"), and vector graphics ("draw") type applications. Such work requires a powerful CPU and a high resolution display. A graphic workstation is very similar to a CAD workstation and, given the typical specifications of personal computers currently available in 1999, the distinctions are very blurred and are more likely to depend on availability of specific software than any detailed hardware requirements.
- great idaean mother — Cybele.
- great wall of china — a system of fortified walls with a roadway along the top, constructed as a defense for China against the nomads of the regions that are now Mongolia and Manchuria: completed in the 3rd century b.c., but later repeatedly modified and rebuilt. 2000 miles (3220 km) long.
- greenhouse whitefly — See under whitefly.
- gulf of tehuantepec — an inlet of the Pacific on the south coast of the Isthmus of Tehuantepec in S Mexico
- 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.
- handlebar moustache — a man's moustache having long, curved ends that resemble the handlebars of a bicycle.
- 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 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
- harmonic distortion — distortion caused by nonlinear characteristics of electronic apparatus, esp of audio amplifiers, that generate unwanted harmonics of the input frequencies
- hate someone's guts — to hate someone intensely
- 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 few too many — If you say that someone has had a few too many or has had a few, you mean that they have drunk too many alcoholic drinks.
- 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 nose for sth — If you say that someone has a nose for something, you mean that they have a natural ability to find it or recognize it.
- 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 the makings of — show potential as
- haves and have-nots — If you refer to two groups of people as haves and have-nots, you mean that the first group are very wealthy and the second group are very poor. You can also refer generally to poor people as have-nots.
- 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).
- 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.
- 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.
- hermitian conjugate — adjoint (def 2).
- 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.
- hold no terrors for — If something holds no terrors for you, you are not at all frightened or worried by it.
- holiday entitlement — the number of days of paid holiday in a year that a worker is entitled to take
- holy innocents' day — December 28, a day of religious observance commemorating the slaughter of the children of Bethlehem by Herod's order.
- hop, step, and jump — triple jump.
- horizontal drilling — Horizontal drilling is drilling in which the direction of the wellbore is more than 80 degrees from the vertical.
- horizontal encoding — (processor) An instruction set where each field (a bit or group of bits) in an instruction word controls some functional unit or gate directly, as opposed to vertical encoding where instruction fields are decoded (by hard-wired logic or microcode) to produce the control signals. Horizontal encoding allows all possible combinations of control signals (and therefore operations) to be expressed as instructions whereas vertical encoding uses a shorter instruction word but can only encode those combinations of operations built into the decoding logic. An instruction set may use a mixture of horizontal and vertical encoding within each instruction. Because an architecture using horizontal encoding typically requires more instruction word bits it is sometimes known as a very long instruction word (VLIW) architecture.
- horizontal mobility — movement from one position to another within the same social level, as changing jobs without altering occupational status, or moving between social groups having the same social status.
- hotel accommodation — the facilities and the quality of accommodation provided by a hotel
- hotel des invalides — a military hospital built in Paris in the 17th and 18th centuries by Libéral Bruant and J. H. Mansart: famous for its chapel dome, the tomb of Napoleon, and as a military museum.