20-letter words containing h, e, p, l
- life-support machine — A life-support machine is the equipment that is used to keep a person alive when they are very ill and cannot breathe without help.
- light the touchpaper — to do something that will cause much anger or excitement
- light-weight process — (operating system, parallel) (LWP) A single-threaded sub-process which, unlike a thread, has its own process identifier and may also differ in its inheritance and controlling features. Several operating systems, e.g. SunOS 5.x, provide system calls for creating and controlling LWPs.
- lighthouse coffeepot — a coffeepot of the late 17th and 18th centuries, having a tapering, circular body with a domed lid.
- like death warmed up — very ill
- linguistic geography — dialect geography.
- llywelyn ap iorwerth — called Llywelyn the Great. died 1240, prince of Gwynedd, N Wales (1194–1238), who extended his rule over most of Wales
- lump in one's throat — the passage from the mouth to the stomach or to the lungs, including the pharynx, esophagus, larynx, and trachea.
- magnetoencephalogram — a record of the magnetic field of the brain. Abbreviation: MEG.
- malpighian corpuscle — Also called kidney corpuscle, Malpighian body. the structure at the beginning of a vertebrate nephron, consisting of a glomerulus and its surrounding Bowman's capsule.
- mechanical impedance — impedance (def 2).
- mechanical-impedance — Electricity. the total opposition to alternating current by an electric circuit, equal to the square root of the sum of the squares of the resistance and reactance of the circuit and usually expressed in ohms. Symbol: Z.
- member of the public — a member of the general population
- methyl propyl ketone — a colorless, slightly water-soluble liquid, C 5 H 1 0 O, used chiefly as a solvent, especially in lacquers.
- microelectrophoresis — any of several techniques for observing, by means of a microscope or an ultramicroscope, the electrophoresis of minute surface particles.
- mobile phone chicken — a highly dangerous game in which a person is challenged to perform a hazardous stunt which he or she films with a camera phone
- mother of the chapel — (in British trade unions in the publishing and printing industries) a woman shop steward
- mother-of-pearl moth — a pyralid moth, Pleuroptya ruralis, having a pale sheen, that is often seen around nettles, on which its green larvae feed
- multiple inheritance — (programming) In object-oriented programming, the possibility that a class may have more than one direct superclass in the class hierarchy. The opposite is single inheritance.
- multipurpose vehicle — a large car, similar to a van, designed to carry up to eight passengers
- multistep hydroplane — a motorship having a flat bottom built as a series of planes inclined forward, the ship planing on each from stem to stern as its speed increases.
- nephroangiosclerosis — (pathology) sclerosis of the renal arterioles.
- neurophysiologically — In terms of, or with regard to, neurophysiology.
- neuropsychiatrically — In terms of neuropsychiatry.
- neuropsychologically — In terms of or by means of neuropsychology.
- north american plate — a major tectonic division of the earth's crust, comprising Greenland and the continent of North America and the suboceanic Labrador and North American Basins, and bounded on the east by the Mid-Atlantic Ridge, on the south by the Caribbean and South American Plates, and on the west by the San Andreas fault and Aleutian Trench.
- north celestial pole — the point of intersection of the earth's extended axis and the northern half of the celestial sphere, lying about 1° from Polaris
- occupational therapy — a form of therapy in which patients are encouraged to engage in vocational tasks or expressive activities, as art or dance, usually in a social setting.
- old english sheepdog — one of an English breed of large working dogs having a long, shaggy, gray or blue-merle and white coat that hangs over the eyes, and a bobbed tail, originally developed to drive sheep and cattle.
- one's spiritual home — Your spiritual home is the place where you feel that you belong, usually because your ideas or attitudes are the same as those of the people who live there.
- ophthalmodynamometer — a device for determining the nearest point of ocular convergence.
- para-dichlorobenzene — a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
- paternal grandfather — the father of someone's father
- paternal grandmother — the mother of someone's father
- people's paths cross — If you cross someone's path or if your paths cross, you meet them by chance.
- peremptory challenge — a formal objection to the service of a juror by a party to a criminal prosecution or a civil action that requires no showing of cause.
- peroxysulphuric acid — a white hygroscopic crystalline unstable oxidizing acid. Formula: H2SO5
- perpendicular gothic — the style of Gothic architecture in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting
- phenyldiethanolamine — a white, crystalline, slightly water-soluble substance, C 1 0 H 1 5 NO 2 , used in the manufacture of dyes and in organic synthesis.
- phenylpropyl acetate — a colorless, water-insoluble liquid, C 1 0 H 1 2 O 2 , used chiefly in perfumery.
- phillips screwdriver — a screwdriver that has a cross at the tip that is intended to be used with Phillips screws
- phillips-screwdriver — a screw head having two partial slots crossed at right angles, driven by a special screwdriver (Phillips screwdriver)
- philoprogenitiveness — producing offspring, especially abundantly; prolific.
- photoconductive cell — Electronics. a photocell whose resistance varies according to the intensity of light falling on it.
- photoelectric effect — the phenomenon in which the absorption of electromagnetic radiation, as light, of sufficiently high frequency by a surface, usually metallic, induces the emission of electrons from the surface.
- photogelatin process — collotype (def 1).
- phthalocyanine green — a pigment used in painting, derived from chlorinated copper phthalocyanine and characterized chiefly by its intense green color and permanence.
- physical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
- physical examination — an examination, usually by a physician, of a person's body in order to determine his or her state of health or physical fitness, as for military service or participation in a sport.
- physical meteorology — the branch of meteorology dealing with the study of optical, electrical, acoustical, and thermodynamic phenomena in the atmosphere, including the physics of clouds and precipitation.