21-letter words containing a, r, h
- horns and halo effect — a tendency to allow one's judgement of another person, esp in a job interview, to be unduly influenced by an unfavourable (horns) or favourable (halo) first impression based on appearances
- human papilloma virus — a species of virus that causes genital warts. Abbreviation: HPV.
- human rights activist — a person who campaigns for human rights
- hydraulic accumulator — an apparatus in which gas, usually air, is used as a cushion or shock absorber in a hydraulic system.
- hyperbolic paraboloid — a paraboloid that can be put into a position such that its sections parallel to one coordinate plane are hyperbolas, with its sections parallel to the other two coordinate planes being parabolas.
- hypercholesterolaemia — the condition of having a high concentration of cholesterol in the blood
- hyperlipoproteinaemia — the condition of having an abnormally high level of lipoproteins in the blood
- hysterosalpingography — (medicine) X-ray examination of the uterus and oviducts following injection of a radiopaque substance.
- in (or out of) phase — in (or not in) a state of exactly parallel movements, oscillations, etc.; in (or not in) synchronization
- in co-ordination with — If you do something in co-ordination with someone else, you both organize your activities so that you work together efficiently.
- in more ways than one — You say in more ways than one to indicate that what you have said is intended to have more than one meaning.
- in the first instance — You say in the first instance to mention something that is the first step in a series of actions.
- indicated horse-power — the horsepower of a reciprocating engine as shown by an indicator record. Abbreviation: ihp, IHP.
- industrial psychology — the application of psychological principles and techniques to business and industrial problems, as in the selection of personnel or development of training programs.
- information gathering — the process of collecting information about something
- insulin shock therapy — a former treatment for mental illness, especially schizophrenia, employing insulin-induced hypoglycemia as a method for producing convulsive seizures.
- interpersonal therapy — a type of psychotherapy that focuses on conflicts in one's personal relationships.
- irish republican army — an underground Irish nationalist organization founded to work for Irish independence from Great Britain: declared illegal by the Irish government in 1936, but continues activity aimed at the unification of the Republic of Ireland and Northern Ireland. Abbreviation: IRA, I.R.A.
- japanese stranglehold — a wrestling hold in which an opponent's wrists are pulled to cross his or her arms in front of his or her own neck and exert pressure on the windpipe
- jordan-holder theorem — the theorem that for any two composition series of a group, an isomorphism exists between the corresponding quotient groups of each series, taken in some specified order.
- joseph bonaparte gulf — an inlet of the Timor Sea in N Australia. Width: 360 km (225 miles)
- joseph-marie jacquard — (person) /zhoh-zef' mah-ree' zhah-kar'/ (1752-07-07 to 1834-08-07) The inventor of the Jacquard loom.
- keep the ball rolling — a spherical or approximately spherical body or shape; sphere: He rolled the piece of paper into a ball.
- korsakoff's psychosis — a mental illness involving severe confusion and inability to retain recent memories, usually caused by alcoholism
- laboratory technician — sb who assists in a laboratory
- lactate dehydrogenase — an enzyme that catalyzes the interconversion of pyruvate and lactate, an important step in carbohydrate metabolism: elevated serum levels indicate injury to kidney, skeletal muscle, or heart muscle. Abbreviation: LDH.
- lady macbeth strategy — a strategy in a takeover battle in which a third party makes a bid acceptable to the target company, appearing to act as a white knight but subsequently joining forces with the original (unwelcome) bidder
- lady murasaki shikibu — Lady, 978?–1031? Japanese poet and novelist.
- lambeth quadrilateral — the four essentials agreed upon at the Lambeth Conference of 1888 for a United Christian Church, namely, the Holy Scriptures, the Apostles' Creed, the sacraments of baptism and Holy Communion, and the historic episcopate
- lap and shoulder belt — a car seat belt
- large hadron collider — a particle accelerator at the European Laboratory for Particle Physics near Geneva, containing a circular underground tunnel 27km (16.8 miles) in circumference, around which two streams of hadrons are sent in opposite directions before being brought together in a high-energy collision
- launch control center — any of a number of underground U.S. command facilities prepared to launch land-based missiles in event of war.
- law of thermodynamics — any of three principles variously stated in equivalent forms, being the principle that the change of energy of a thermodynamic system is equal to the heat transferred minus the work done (first law of thermodynamics) the principle that no cyclic process is possible in which heat is absorbed from a reservoir at a single temperature and converted completely into mechanical work (second law of thermodynamics) and the principle that it is impossible to reduce the temperature of a system to absolute zero in a finite number of operations (third law of thermodynamics)
- leave sb in the lurch — If someone leaves you in the lurch, they go away or stop helping you at a very difficult time.
- light armored vehicle — an eight-wheeled armored reconnaissance car with a 25mm cannon, in service with the U.S. Army and Marine Corps in the 1980s.
- like a shag on a rock — abandoned and alone
- linear graph notation — (LGN) A linearised representation of TCOL trees.
- lose one's heart (to) — to fall in love (with)
- lotus-of-the-true-law — a Mahayana sutra, forming with its references to Amida and the Bodhisattvas the basis for the doctrine that there is something of Buddha in everyone, so that salvation is universally available: a central text of Mahayana Buddhism.
- maidenhair spleenwort — an evergreen fern, Asplenium trichomanes, abundant in woody areas of the North Temperate Zone, having thickly clustered fronds.
- main-topsail schooner — a two-masted or three-masted schooner having square topsails on the foremast and mainmast: a jackass brig or jackass bark.
- maître d'hôtel butter — melted butter mixed with parsley and lemon juice
- majority shareholding — a holding of more than half a company's shares
- make heavy weather of — to create needless difficulties in dealing with
- make yourself at home — settle in
- maryland yellowthroat — (in former systems of nomenclature) the common yellowthroat, Geothlypis trichas, especially the eastern U.S. subspecies.
- mauvais quart d'heure — a brief unpleasant experience
- maximum value theorem — the theorem that for a real-valued function f whose domain is a compact set, there is at least one element x in the domain of f for which f (x) achieves its largest value.
- mechanical instrument — a musical instrument, such as a barrel organ or music box, that plays a preselected piece of music by mechanical means
- mechanical metallurgy — the branch of metallurgy dealing with the response of metals to applied forces.