23-letter words containing h, a, n, o
- heaviside unit function — the function that is zero for any number less than zero and that is 1 for any number greater than or equal to zero.
- hermit of st. augustine — a member of an order of mendicant friars, founded in 1256.
- heterogeneous catalysis — Heterogeneous catalysis is catalysis in which the catalyst does not take part in the reaction that it increases.
- hexagonal cross-section — If a kelly has a hexagonal cross-section, it has a surface area with six equal sides, when looked at as if has been sliced through.
- hierarchical navigation — (web) On a web page, any type of menu whose hierarchical structure matches that of the site to which the page belongs. A hierarchical navigation menu allows the user to jump ("navigate") directly to a section of the site several levels below the top. The menu may present only a fixed number of levels rather than the whole structure.
- higher national diploma — a work-related higher education qualification, taking two years full-time.
- hold on like grim death — to hold very firmly or resolutely
- hook-and-ladder company — a company of firefighters equipped with a hook-and-ladder truck.
- horsehair-blight fungus — a fungal parasite, Marasmius equicrinis, that causes a disease of certain tropical plants, especially tea.
- hortense de beauharnais — Beauharnais, Eugénie Hortense de.
- human leukocyte antigen — HLA.
- hunchback of notre dame — French Notre Dame de Paris. a novel (1831) by Victor Hugo.
- hydrochlorofluorocarbon — Any of a class of inert compounds of carbon, hydrogen, hydrocarbons, chlorine, and fluorine, used in place of chlorofluorocarbons as being somewhat less destructive to the ozone layer.
- hypergeometric equation — a differential equation of the form, (x 2 − x) d 2 y / d 2 x + [(a+b +1) x−c ] dy/dx + abx =0, where a, b, and c are arbitrary constants.
- hypobetalipoproteinemia — (pathology) A low level of betalipoprotein (low-density lipoprotein) in the bloodstream.
- icosidodecadodecahedron — A polyhedron having 44 faces, 60 vertices, 120 edges, 12 self intersected faces and 12 nonconvex faces.
- immigration authorities — the authorities or official government bodies who regulate laws regarding immigration and immigrants
- in sack cloth and ashes — sacking.
- in the arms of morpheus — sleeping
- in the nature of things — If you say that something is in the nature of things, you mean that you would expect it to happen in the circumstances mentioned.
- in your heart of hearts — If you believe or know something in your heart of hearts, that is what you really believe or think, even though it may sometimes seem that you do not.
- industrial psychologist — a person who studies human behaviour and cognitive processes in relation to the working environment
- interchange file format — (file format) (IFF, full name "EA IFF 1985") A generic file format published by Electronic Arts as an open standard. IFF is chunk-based and hierarchical so files can include other files. It is easily extensible and an all round Good Idea. An IFF file starts with one of the following "group IDs": 'FORM', 'LIST' or 'CAT '. This is followed by an unsigned 32-bit number of bytes in the remainder of the file. Then comes an ID that indicates which type of IFF file this is. The main image type is ILBM, audio is either AIFF or 8SVX, animations are ANIM etc. An IFF file will probably have a filename extension related to this file type stored in the file. The rest of the file is divided into chunks each of which also has a four-byte header and byte count.
- intermediate technology — technology which combines sophisticated ideas with cheap and readily available materials, esp for use in developing countries
- irish christian brother — Brother of the Christian Schools (def 2).
- keep sth under your hat — If you tell someone to keep a piece of information under their hat, you are asking them not to tell anyone else about it.
- kinetic theory of gases — a theory that the particles in a gas move freely and rapidly along straight lines but often collide, resulting in variations in their velocity and direction. Pressure is interpreted as arising from the impacts of these particles with the walls of a container.
- knight in shining armor — chivalrous man
- knock into a cocked hat — a man's hat, worn especially in the 18th century, having a wide, stiff brim turned up on two or three sides toward a peaked crown. Compare bicorne, tricorn (def 2).
- laughlin air force base — U.S. Air Force installation in SW Texas, SE of Del Rio.
- leave well enough alone — in a good or satisfactory manner: Business is going well.
- long-horned grasshopper — any of numerous insects of the family Tettigoniidae, having long, threadlike antennae and well-developed stridulating organs on the forewings of the male.
- magneto-encephalography — a record of the magnetic field of the brain. Abbreviation: MEG.
- magnetohydrodynamically — In a magnetohydrodynamic way.
- magnetomechanical ratio — the ratio of the angular momentum of a rotating charged particle to its magnetic moment; the reciprocal of the gyromagnetic ratio.
- make allowances for sth — If you make allowances for something, you take it into account in your decisions, plans, or actions.
- make an honest woman of — to marry (a woman, esp one who is pregnant) to prevent scandal
- martha washington chair — a chair of the 18th century having a high upholstered back, a low upholstered seat, and short arms resting on incurvate supports.
- martha washington table — a sewing table of the 18th century having an oval top that can be lifted and a central compartment of drawers with semicircular bins at each end.
- masters of the universe — extremely powerful and wealthy members of the financial professions
- meaningful relationship — a romantic relationship based upon mutual respect and supportiveness and marked by a sense of commitment and fulfillment.
- more than meets the eye — hidden motives, meaning, or facts
- national health service — In Britain, the National Health Service is the state system for providing medical care. It is paid for by taxes.
- neutrosophic statistics — (statistics) Analysis of events described by neutrosophic probability.
- new year's honours list — an Honour's List published at the beginning of a new year
- new york stock exchange — the largest stock exchange in the U.S., located in New York City. Abbreviation: NYSE, N.Y.S.E.
- nigger of the narcissus — a novel (1897) by Joseph Conrad.
- north east lincolnshire — a unitary authority in E England, in Lincolnshire: formerly (1974–96) part of the county of Humberside. Pop: 157 400 (2003 est). Area: 192 sq km (74 sq miles)
- north ossetian republic — a constituent republic of S Russia, on the N slopes of the central Caucasus Mountains. Capital: Vladikavkaz. Pop: 709 900 (2002). Area: about 8000 sq km (3088 sq miles)
- not a hair out of place — If you say that someone has not a hair out of place, you are emphasizing that they are extremely smart and neatly dressed.