17-letter words containing l, o, n, r, t

neurophysiologist — the branch of physiology dealing with the functions of the nervous system.
neuropsychologist — A neurologist or psychologist whose speciality is neuropsychology.
new orleans style — a style of jazz developed in New Orleans early in the 20th century, influenced by blues, ragtime, marching band music, and minstrelsy and marked by polyphonic group improvisation.
new scotland yard — See under Scotland Yard (def 1).
nitrohydrochloric — (chemistry) Of, pertaining to, or containing, nitric acid and hydrochloric acids.
non-controversial — of, relating to, or characteristic of controversy, or prolonged public dispute, debate, or contention; polemical: a controversial book.
non-environmental — the aggregate of surrounding things, conditions, or influences; surroundings; milieu.
non-instructional — the act or practice of instructing or teaching; education.
non-materialistic — excessively concerned with physical comforts or the acquisition of wealth and material possessions, rather than with spiritual, intellectual, or cultural values.
non-proliferation — Non-proliferation is the limiting of the production and spread of something such as nuclear or chemical weapons.
non-stereotypical — a process, now often replaced by more advanced methods, for making metal printing plates by taking a mold of composed type or the like in papier-mâché or other material and then taking from this mold a cast in type metal.
non-thermoplastic — soft and pliable when heated, as some plastics, without any change of the inherent properties.
noninertial frame — a frame of reference that moves with the object, so that the moving object appears to violate Newton's laws of motion since it accelerates despite having no horizontal forces on it.
nonunderstandable — Not understandable.
nord-ostsee kanal — German name of Kiel Canal.
normal orthogonal — orthonormal.
north lanarkshire — a council area of central Scotland: consists mainly of the NE part of the historical county of Lanarkshire; formerly (1974–96) part of Strathclyde Region: engineering and metalworking industries. Administrative centre: Motherwell. Pop: 321 820 (2003 est). Area: 1771 sq km (684 sq miles)
north little rock — a city in central Arkansas, on the Arkansas River.
north-wall hammer — a type of ice axe that has a hammer as part of its head
not lift a finger — any of the terminal members of the hand, especially one other than the thumb.
not on your nelly — not under any circumstances; certainly not
not spare oneself — to exert oneself to the full
nuclear radiation — Physics. radiation in the form of elementary particles emitted by an atomic nucleus, as alpha rays or gamma rays, produced by decay of radioactive substances or by nuclear fission.
nuclear threshold — the point in war at which a combatant brings nuclear weapons into use
numerical control — control of a machine tool, or other device used in a manufacturing process, by a computer, other control circuitry, or recorded digital commands.
off one's trolley — trolley car.
off-year election — (in the US) an election held in a year when a presidential election does not take place
oil of turpentine — a colorless, flammable, volatile essential oil having a penetrating odor and a pungent, bitter taste, obtained from turpentine oleoresin by distillation: used in paints and varnishes, and in medicine as a carminative, vermifuge, expectorant, rubefacient, and, formerly, as a diuretic.
old red sandstone — a thick sequence of sedimentary rock (generally, but not always, red) deposited in Britain and NW Europe during the Devonian period
old south arabian — a group of four closely related Semitic languages, having a writing system and used from about the eighth to the fifth centuries b.c. in the southern part of Arabia.
old spanish trail — an overland route from Santa Fe, N. Mex., to Los Angeles, Calif., first marked out in 1776 by Spanish explorers and missionaries.
omphalomesenteric — (anatomy) Of or pertaining to the umbilicus and mesentery.
on cruise control — If you say that someone is on cruise control in a contest, you mean that they are winning the contest easily and without needing to make a lot of effort.
on the barrelhead — upon being presented for sale; at the time of delivery
once over lightly — a hasty or superficial treatment, look, examination, etc.; once-over: The maid gave the room the once-over-lightly.
once-over-lightly — a hasty or superficial treatment, look, examination, etc.; once-over: The maid gave the room the once-over-lightly.
one-parent family — A one-parent family is a family that consists of one parent and his or her children living together.
online dictionary — a dictionary that is available on the Internet or World Wide Web and accessed through a Web browser using a computer or a mobile device, primarily by typing a query term into a search box on the site. Online dictionaries like Dictionary.com offer immediate, direct access through large databases to a word's spelling and meanings, plus a host of ancillary information, including its variant spellings, pronunciation, inflected forms, origin, and derived forms, as well as supplementary notes on matters of interest or concern about how the word is used: Some people think online dictionaries will make print dictionaries obsolete.
operation sealion — the codename for Hitler's proposed invasion (1940) of Great Britain
opportunistically — adhering to a policy of opportunism; practicing opportunism.
optical astronomy — the branch of observational astronomy using telescopes to observe or photograph celestial objects in visible light.
optical carrier n — (networking) (OC-n) A SONET rate of n times 51.84 megabits per second.
organized militia — a former military organization functioning under both state and federal authority.
ortho-nitrophenol — any compound derived from phenol by the replacement of one or more of its ring hydrogen atoms by the nitro group.
orthogonal matrix — a matrix that is the inverse of its transpose so that any two rows or any two columns are orthogonal vectors
orthogonalization — (mathematics) The process of converting a set of functions or vectors into orthogonal ones.
osculating circle — circle of curvature.
otolaryngological — Pertaining to otolaryngology.
otolaryngologists — Plural form of otolaryngologist.
out of all reason — unreasonable

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