19-letter words containing r, e, t, n, i
- heart in your mouth — If your heart is in your mouth, you feel very excited, worried, or frightened.
- 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.
- high-flying tippler — a variety of domestic pigeon bred mainly for flying
- highways department — the department of a state, council, etc, responsible for the upkeep of roads and highways
- 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.
- house of correction — a place for the confinement and reform of persons convicted of minor offenses and not regarded as confirmed criminals.
- human rights abuses — acts that contravene human rights
- human rights record — the facts that are known about the tendency of a country, regime, etc, to observe and protect human rights
- huntington's chorea — a hereditary disease of the central nervous system characterized by brain deterioration and loss of control over voluntary movements, the symptoms usually appearing in the fourth decade of life.
- hydropneumatization — utilization of air pressure in the housing of a water turbine to keep the level of water that has been used from rising to interfere with the rotor blades.
- hydrostatic balance — a balance for finding the weight of an object submerged in water in order to determine the upthrust on it and thus determine its relative density
- hyper-nationalistic — a person devoted to nationalism.
- hyperbolic cosecant — a hyperbolic function that is the reciprocal of hyperbolic sine
- hyperbolic function — a function of an angle expressed as a relationship between the distances from a point on a hyperbola to the origin and to the coordinate axes, as hyperbolic sine or hyperbolic cosine: often expressed as combinations of exponential functions.
- hyperfine structure — the splitting of the lines of an atomic spectrum, produced by the angular momentum of the nucleus of the atom.
- hyperfocal distance — the distance, at a given f number, between a camera lens and the nearest point (hyperfocal point) having satisfactory definition when focused at infinity.
- hypolipoproteinemia — An abnormally low level of lipoprotein in the blood.
- hysterosalpingogram — An X-ray image taken during hysterosalpingography.
- identification card — a card giving identifying data about a person, as full name, address, age, and color of hair and eyes, and often containing a photograph: for use as identification at a place of employment, school, club, etc.
- identification mark — barcode or serial number
- immersion objective — a microscope objective of high resolving power in which the space between the front lens and the cover glass is filled with an oil whose index of refraction is close to that of the objective and the cover glass.
- immigration officer — official administrating incoming foreigners
- immunocytochemistry — the detection of chemical components of cells by means of antibodies coupled to substances that can be made visible.
- immunoprecipitation — the separation of an antigen from a solution by the formation of a large complex with its specific antibody.
- imperative language — (language) Any programming language that specifies explicit manipulation of the state of the computer system, not to be confused with a procedural language, which specifies an explicit sequence of steps to perform. An example of an imperative (but non-procedural) language is a data manipulation language for a relational database management system. This specifies changes to the database but does not necessarily require anyone to specify a sequence of steps. Both contrast with declarative languages, which specify neither explicit state manipulation nor a sequence of steps.
- impressionistically — In an impressionistic manner.
- in commemoration of — in remembrance of
- in consideration of — the act of considering; careful thought; meditation; deliberation: I will give your project full consideration.
- in definite pronoun — a pronoun, as English some, any, somebody, that leaves unspecified the identity of its referent.
- in one's right mind — sane
- in particular terms — If you say something in particular terms, you say it using a particular type or level of language or using language which clearly shows your attitude.
- in the catbird seat — If you say that someone is in the catbird seat, you think that their situation is very good.
- in the driving seat — If you say that someone is in the driving seat, you mean that they are in control in a situation.
- in the person of sb — You can use in the person of when mentioning the name of someone you have just referred to in a more general or indirect way.
- in the tradition of — If you say that something or someone is in the tradition of a person or thing from the past, you mean that they have many features that remind you of that person or thing.
- in this/that regard — You can use in this regard or in that regard to refer back to something that you have just said.
- in-service training — training that is given to employees during the course of employment
- incomplete abortion — a miscarriage in which some fetal or placental tissue remains in the uterus.
- incomplete fracture — a fracture extending partly across the bone.
- incomprehensibility — impossible to understand or comprehend; unintelligible.
- incontrovertibility — The state or characteristic of being incontrovertible, of not being debatable; incontestability.
- incremental plotter — a device that plots graphs on paper from computer-generated instructions