21-letter words containing a, h, n, d
- 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.
- 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
- jewish defense league — an organization of militant Jewish activists, founded in 1968 in the U.S. to combat anti-Semitism and defend Jewish interests worldwide. Abbr.: JDL.
- 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.
- jump on the bandwagon — do sth because it is popular
- just a bunch of disks — (jargon, storage) (JBOD, or "Just a Bunch of Drives") A storage subsystems using multiple independent disk drives, as opposed to one form of RAID or another. For example, Unisys open storage provides JBOD in both SCSI and fibre channel interfaces.
- khalid ibn abdul aziz — 1913–82, king and President of the Council of Ministers of Saudi Arabia (1975–82)
- 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.
- 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
- 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 holding the bag — a container or receptacle of leather, plastic, cloth, paper, etc., capable of being closed at the mouth; pouch.
- maidenhair spleenwort — an evergreen fern, Asplenium trichomanes, abundant in woody areas of the North Temperate Zone, having thickly clustered fronds.
- majority shareholding — a holding of more than half a company's shares
- make (both) ends meet — to manage to keep one's expenses within one's income
- maryland yellowthroat — (in former systems of nomenclature) the common yellowthroat, Geothlypis trichas, especially the eastern U.S. subspecies.
- mechanical solidarity — social cohesiveness that is based on shared activities, beliefs, and experiences and is characteristic of simple traditional societies.
- modern apprenticeship — an arrangement that allows a school leaver to gain vocational qualifications while being trained in a job
- monochloroacetic acid — chloroacetic acid.
- motherwell and wishaw — a burgh in the Motherwell district, in S Scotland.
- move heaven and earth — the abode of God, the angels, and the spirits of the righteous after death; the place or state of existence of the blessed after the mortal life.
- munchausen's syndrome — a mental disorder in which a patient feigns illness to obtain hospital treatment
- near-death experience — A near-death experience is a strange experience that some people who have nearly died say they had when they were unconscious.
- neither hide nor hair — nothing whatsoever
- northumberland strait — the part of the Gulf of St. Lawrence that separates Prince Edward Island from New Brunswick and Nova Scotia, in SE Canada. About 200 miles (320 km) long; 9–30 miles (15–48 km) wide.
- not hold one's breath — If you say that you won't hold your breath, you mean that you do not expect something to happen even though someone has suggested that it might.
- of time and the river — a novel (1935) by Thomas Wolfe.
- old spanish practices — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
- one thing and another — You can use the expression 'one thing and another' to suggest that there are several reasons for something or several items on a list, but you are not going to explain or mention them all.
- overhead-valve engine — I-head engine.
- pass the hat (around) — In British English, if you pass the hat around, you collect money from a group of people, for example in order to give someone a present. In American English, you just say pass the hat.
- pathfinder prospectus — a prospectus regarding the flotation of a new company that contains only sufficient details to test the market reaction
- pentamethylenediamine — cadaverine.
- phenarsazine chloride — adamsite.
- physically challenged — See example at challenged (def 1).
- pipelined burst cache — Pipeline Burst Cache
- ploughman's spikenard — a European plant, Inula conyza, with tubular yellowish flower heads surrounded by purple bracts: family Asteraceae (composites)
- privacy enhanced mail —
- propantheline bromide — a substance, C 2 3 H 3 0 BrNO 3 , used in the treatment of peptic ulcers.
- purchasing department — the group of staff within an organization that is responsible for buying goods or products
- put in the hard yards — to make a great effort to achieve an end
- rayleigh distribution — (mathematics) A curve that yields a good approximation to the actual labour curves on software projects.
- reading comprehension — a text that students use to help them improve their reading skills, by reading it and answering questions relating to the text. Sometimes used as a test or examination of reading skills. A reading comprehension can be in the student's own or another language
- record of achievement — a statement of the personal and educational development of each pupil
- richard coeur de lion — ("Richard the Lion-Hearted"; "Richard Coeur de Lion") 1157–99, king of England 1189–99.
- right-angled triangle — a triangle one angle of which is a right angle
- ring down the curtain — to lower the curtain at the end of a theatrical performance
- ring-around-the-rosey — a children's game in which the players sing while going around in a circle and squat when the lyrics “all fall down” are sung.
- rutherford scattering — the scattering of an alpha particle through a large angle with respect to the original direction of motion of the particle, caused by an atom (Rutherford atom) with most of the mass and all of the positive electric charge concentrated at a center or nucleus.