18-letter words containing a, o, e

normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
north attleborough — a city in SE Massachusetts.
north polar region — the region of land and water surrounding the North Pole.
north saskatchewan — a river in S central Canada, flowing E from the Rocky Mountains and joining the South Saskatchewan River to form the Saskatchewan River. 760 miles (1223 km) long.
north truchas peak — a mountain in N New Mexico, near Santa Fe: one of the three Truchas Peaks. 13,110 feet (3999 meters).
northeast by north — a point on the compass 11°15′ north of northeast. Abbreviation: NEbN.
northeast corridor — the long, narrow strip of land between Boston, New York City, and Washington, D.C., containing many adjacent urban areas.
northern cameroons — German Kamerun. a region in W Africa: a German protectorate 1884–1919; divided in 1919 into British and French mandates.
northern transvaal — province of South Africa, in the N part: 47,599 sq mi (123,280 sq km); pop. 5,202,000; cap. Pietersburg
norwegian elkhound — one of a breed of dogs having a short, compact body, short, pointed ears, and a thick, gray coat, raised originally in Norway for hunting elk and other game.
not a hope in hell — If you say that someone has not got a hope in hell of doing something, you are emphasizing that they will not be able to do it.
not a pretty sight — If you say that someone or something is not a pretty sight, you mean that it is not pleasant to look at.
not breathe a word — to take air, oxygen, etc., into the lungs and expel it; inhale and exhale; respire.
not have the heart — If you want to do something but do not have the heart to do it, you do not do it because you know it will make someone unhappy or disappointed.
not in a fit state — If you say that someone is not in a fit state to do something, you mean that they are too upset or ill to do it.
not take kindly to — not welcome
not to have a clue — to be completely baffled
notifiable disease — any one of a number of infectious diseases of humans and animals, that must be reported to the public health authorities
now you're talking — at last you're saying something agreeable
nueva san salvador — Santa Tecla.
numerical taxonomy — classification of organisms by a comparison of large numbers of observable characteristics that are given equal value instead of being weighted according to possible evolutionary significance.
nurse practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
nurse-practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
oak-leaf hydrangea — a shrub, Hydrangea quercifolia, of the southeastern U.S., having lobed leaves and pyramidal clusters of white flowers.
oath of allegiance — pledge to one's nation
obedience training — the training of an animal, especially a dog, to obey certain commands.
object-orientation — object-oriented
objective idealism — a form of idealism asserting that the act of experiencing has a reality combining and transcending the natures of the object experienced and of the mind of the observer.
objective modula-2 — (language) (Or "ObjM2") An extension to Modula-2 for Cocoa and GNUstep software development. Objective Modula-2 follows the Objective-C object model and retains the bracketed Smalltalk message passing syntax used in Objective-C. Classes written in ObjM2 can be used within ObjC and vice versa. ObjM2 also retains Modula-2's data encapsulation features, namely nested modules with explicit import and export lists. Due to the strict type checking in Modula-2, ObjM2 can be considered a much safer programming language than is ObjC, yet losing none of the capabilities of ObjC.
oblique-slip fault — a fault on which the movement is along both the strike and the dip of the fault
occasional licence — a licence granted to sell alcohol only at specified times
octachlorobiphenyl — (organic compound) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atoms.
oedipus at colonus — a tragedy by Sophocles, written toward the end of his life and produced posthumously in 401? b.c.
off-street parking — spaces for cars located on private property rather than on a public street
offensive material — any published or broadcast content (such as articles, photographs, films, or websites) that is likely to be upsetting, insulting, or objectionable to some or most people
office of readings — the first of the canonical hours; matins
officer of the day — an officer who has charge of the guard and prisoners on an assigned day at a military installation. Abbreviation: OD, O.D., O.O.D.
offset lithography — offset (def 6).
oil of catechumens — holy oil used in baptism, the ordination of a cleric, the coronation of a sovereign, or in the consecration of a church.
old man of the sea — (in The Arabian Nights' Entertainments) an old man who clung to the shoulders of Sindbad the Sailor for many days and nights.
omega-3 fatty acid — a polyunsaturated fatty acid, essential for normal retinal function, that influences various metabolic pathways, resulting in lowered cholesterol and triglyceride levels, inhibited platelet clotting, and reduced inflammatory and immune reactions.
on a sticky wicket — in an awkward situation
on delicate ground — in a situation requiring tact
on one's beam-ends — out of resources; destitute
on one's last legs — either of the two lower limbs of a biped, as a human being, or any of the paired limbs of an animal, arthropod, etc., that support and move the body.
on that/this score — You can use on that score or on this score to refer to something that has just been mentioned, especially an area of difficulty or concern.
on the back burner — low priority
on the danger list — critically ill in hospital
on the ragged edge — precariously close to loss of self-control, mental stability, etc.
once in a lifetime — extremely rarely

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