17-letter words containing d, e, g, n
- legendre equation — a differential equation of the form (1− x 2) d2y/dx2 − 2 xdy/dx + a (a + 1) y = 0, where a is an arbitrary constant.
- light in the head — dizzy; giddy
- line conditioning — (communications) The adjustment of electrical characteristics of, e.g., twisted pair telephone lines by insertion of components such as resistors, capacitors, transformers or (commonly) inductors. Lines intended for analogue voice signals usually have inductors inserted every few miles; such a line is said to be "loaded". The special purpose lines which have neither inductors nor the DC voltage which powers ordinary telephones are said to be "dry," and are much better for data transmission.
- line of longitude — an imaginary line on a globe, map, etc, indicating longitude
- litigation friend — a person acting on behalf of an infant or other person under legal disability
- livingstone daisy — a gardener's name for various species of Mesembryanthemum, esp M. criniflorum, grown as garden annuals (though several are perennial) for their brightly coloured showy flowers: family Aizoaceae
- longitudinal wave — a wave in which the direction of displacement is the same as the direction of propagation, as a sound wave.
- macdonnell ranges — a mountain system of central Australia, in S central Northern Territory, extending about 160 km (100 miles) east and west of Alice Springs. Highest peak: Mount Zeil, 1531 m (5024 ft)
- madiba generation — the generation born around 1994, when Nelson Mandela became the first president of a multiracial South Africa
- magellanic clouds — either of two irregular galactic clusters in the southern heavens that are the nearest independent star system to the Milky Way.
- magnetic meridian — a line on the earth's surface, passing in the direction of the horizontal component of the earth's magnetic field.
- managing director — manager who oversees a project
- manganese dioxide — a blackish, crystalline or powdery substance, MnO2, that is a strong oxidizing agent, used in making batteries, matches, etc.
- many-valued logic — the study of logical systems in which the truth-values that a proposition may have are not restricted to two, representing only truth and falsity
- marais des cygnes — a river in E central Kansas and W Missouri, flowing SE to the Osage River. 150 miles (241 km) long.
- marriage guidance — counselling for married couples
- mechanical digger — a machine used for excavation
- medulla oblongata — the lowest or hindmost part of the brain, continuous with the spinal cord.
- metatungstic acid — an oxyacid acid of tungsten. Formula: H2W4O13
- methylidyne group — the trivalent group ≡CH.
- mid-oceanic ridge — the continuous, double-ridged chain of mountains on the ocean floor, extending through the middle of the Atlantic Ocean and into the Indian and Pacific oceans
- middle low german — Low German of the period c1100–c1500.
- middle management — the middle echelon of administration in business and industry.
- midmorning prayer — the third of the seven canonical hours; terce
- midsagittal plane — a plane passing through the nasion when the skull is oriented in the Frankfurt horizontal.
- mileage indicator — a device on a vehicle such as a car, plane, etc which indicates the number of miles travelled
- millennium bridge — a steel bridge for pedestrians over the River Thames linking the City of London at St Paul's Cathedral with the Tate Modern Gallery at Bankside: it has a span of 325 m (1056 ft)
- misunderstandings — Plural form of misunderstanding.
- modeling language — modelling language
- monkeygland sauce — a piquant sauce, made from tomatoes, ketchup, fruit chutney, garlic, spices, etc
- mundane astrology — the astrology of worldly events, in contrast to the astrology of the individual: used especially in interpretations and forecasts involving politics, the stock market, weather, and disasters.
- naked singularity — an infinitely dense point mass without a surrounding black hole
- negative feedback — Electronics. the process of returning part of the output of a circuit, system, or device to the input, either to oppose the input (negative feedback) or to aid the input (positive feedback) acoustic feedback.
- neurodegenerative — Resulting in or characterized by degeneration of the nervous system, especially the neurons in the brain.
- new england aster — a tall composite plant, Aster novae-angliae, of the northeastern U.S., the flowers of which have lavender to deep-purple rays.
- new england range — a plateau in New South Wales in SE Australia, in the Great Dividing Range, rising to 5000 feet (1524 meters).
- new guinea pidgin — the variety of Neo-Melanesian spoken in Papua New Guinea and neighbouring islands
- niger-kordofanian — a language family comprising Niger-Congo and Kordofanian.
- nightshade family — the plant family Solanaceae, characterized by herbaceous plants, trees, shrubs, and vines having alternate, simple or pinnate leaves, conspicuous flowers, and fruit in the form of a berry or capsule, and including belladonna, eggplant, nightshade, peppers of the genus Capsicum, petunia, potato, tobacco, and tomato.
- nitrogen peroxide — the equilibrium mixture of nitrogen dioxide and dinitrogen tetroxide
- non-biodegradable — capable of decaying through the action of living organisms: biodegradable paper; biodegradable detergent.
- non-corresponding — identical in all essentials or respects: corresponding fingerprints.
- north frigid zone — the part of the earth's surface between the Arctic Circle and the North Pole.
- old age pensioner — An old age pensioner is a person who is old enough to receive an pension from their employer or the government.
- on a razor's edge — in an acute dilemma
- on second thought — Often, second thoughts. reservation about a previous action, position, decision, judgment, or the like: He had second thoughts about his decision.
- open-end mortgage — a mortgage agreement against which new sums of money may be borrowed under certain conditions.
- organized ferment — ferment (def 1).
- organized militia — a former military organization functioning under both state and federal authority.
- overhead lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc