17-letter words containing t, a, n, g

native frangipani — an Australian evergreen tree, Hymenosporum flavum, with large fragrant yellow flowers: family Pittosporaceae
natural logarithm — a logarithm having e as a base. Symbol: ln.
nautical twilight — the period of time during which the sun is 12° below the horizon
navigation lights — lights on an aircraft
navigation system — A navigation system is an instrument that determines the position of a vehicle and the route to a particular place.
negative catalyst — an inhibitor.
negative eugenics — the study of or belief in the possibility of improving the qualities of the human species or a human population, especially by such means as discouraging reproduction by persons having genetic defects or presumed to have inheritable undesirable traits (negative eugenics) or encouraging reproduction by persons presumed to have inheritable desirable traits (positive eugenics)
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.
negative particle — a word that indicates negativity, for example 'not' in English or 'ne pas' in French
negative polarity — the grammatical character of a word or phrase, such as ever or any, that may normally be used only in a semantically or syntactically negative or interrogative context
negative theology — a theological approach or tradition in which the nature of God is thought to be unknowable and is only understood through negative statements. See also apophasis (def 2).
negative transfer — the obstruction of or interference with new learning because of previous learning, as when a U.S. tourist in England learns to drive on the left side of the road.
negotiating table — If you say that people are at the negotiating table, you mean that they are having discussions in order to settle a dispute or reach an agreement.
nessler's reagent — an aqueous solution of potassium iodide, mercuric chloride, and potassium hydroxide, used as a test for the presence of ammonia.
network marketing — a marketing strategy in which sales representatives of a company recruit other salespeople and earn commissions on their own sales and on the sales made by their team: Use your personal relationships to be successful in network marketing.
neurodegenerative — Resulting in or characterized by degeneration of the nervous system, especially the neurons in the brain.
neuropathological — (medicine) Of, pertaining to, or arising from neuropathology, the pathology of nerve tissue.
new age traveller — New Age travellers are people who live in tents and vehicles and travel from place to place, and who reject many of the values of modern society.
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.
newspaper cutting — clipping from a news publication
ngaliema mountain — Mount, a mountain with two summits, in central Africa, between Uganda and the Democratic Republic of the Congo: highest peak in the Ruwenzori group. 16,790 feet (5119 meters).
night after night — every night or for many successive nights
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 fixation — any process of combining atmospheric nitrogen with other elements, either by chemical means or by bacterial action: used chiefly in the preparation of fertilizers, industrial products, etc.
nitrogen narcosis — a semistupor, lightheadedness, or euphoria experienced by deep-sea divers when nitrogen from air enters the blood at higher than atmospheric pressure.
non-argumentative — fond of or given to argument and dispute; disputatious; contentious: The law students were an unusually argumentative group.
non-assignability — capable of being specified: The word has no assignable meaning in our language.
non-incriminating — to accuse of or present proof of a crime or fault: He incriminated both men to the grand jury.
non-profit-making — A non-profit-making organization or charity is not run with the intention of making a profit.
non-reciprocating — to give, feel, etc., in return.
nondiscriminating — differentiating; analytical.
nonteaching staff — employees within an academic or vocational environment whose jobs do not involve teaching
normal orthogonal — orthonormal.
northeast passage — a ship route along the N coast of Europe and Asia, between the North Sea and the Pacific.
northern michigan — the peninsula between lakes Superior and Michigan constituting the N part of Michigan. Abbreviation: U.P.
northwest passage — a ship route along the Arctic coast of Canada and Alaska, joining the Atlantic and Pacific oceans.
norwegian current — an ocean current formed from the terminus of the North Atlantic Current, flowing N along the Norwegian coast into the Barents Sea.
not lift a finger — any of the terminal members of the hand, especially one other than the thumb.
nothing less than — You can use nothing less than to emphasize your next words, often indicating that something seems very surprising or important.
nothing more than — merely, solely
on speaking terms — the act, utterance, or discourse of a person who speaks.
on the pig's back — successful; established
on the wrong tack — a short, sharp-pointed nail, usually with a flat, broad head.
on-street parking — parking (of a car, vehicle, etc) that is or is allowed to be done on a street
open-end mortgage — a mortgage agreement against which new sums of money may be borrowed under certain conditions.
opening arguments — the statements or arguments provided by lawyers at the beginning of a trial
operating theatre — An operating theatre is a special room in a hospital where surgeons carry out medical operations.
optical computing — (hardware) (Or "Optical Signal Processing") Operating on data represented using electromagnetic radiation, e.g. visible light, instead of the electrical signals used in a conventional electronic digital computer. Electronic digital computers are built from transistors. These form components that store data and logic gates that perform the low-level Boolean operations such as AND, OR and NOT that are the basis of all digital computation. The optical equivalent requires material with a non-linear refractive index such that light beams can interact with each other to perform the same Boolean operations. Though the photons that carry optical signals offer some theoretical advantages over the electrons that carry electronic signals, there are many practical problems that would have to be overcome before optical computing could compete in terms of cost, power and speed.
orange free state — a province in central Republic of South Africa: a Boer republic 1854–1900; a British colony (Orange River Colony, ) 1900–10. 49,647 sq. mi. (128,586 sq. km). Capital: Bloemfontein.
organ-pipe cactus — a treelike or columnar cactus, Lemaireocereus marginatus, of Mexico, having a central, erect spine surrounded by spreading spines in clusters of five to eight, and funnel-shaped, brownish-purple flowers.

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