17-letter words containing a, c, o, u, s
- inefficaciousness — Lack of efficacy.
- insectivorous bat — any bat of the suborder Microchiroptera, typically having large ears and feeding on insects. The group includes common bats (Myotis species), vampire bats, etc
- insurance company — company that sells insurance policies
- integrated course — a course that covers several subjects
- intercommunicates — Third-person singular simple present indicative form of intercommunicate.
- jus primae noctis — droit du seigneur.
- lame-duck session — (formerly) the December to March session of those members of the U.S. Congress who were defeated for reelection the previous November.
- lance of courtesy — a lance having a blunt head to prevent serious injury by a jouster to an opponent.
- librocubicularist — (rare) A person who reads in bed.
- loco supra citato — l.s.c.
- luminous efficacy — the quotient of the luminous flux of a radiation and its corresponding radiant flux
- luminous exitance — the ability of a surface to emit light expressed as the luminous flux per unit area at a specified point on the surface
- macro-linguistics — a field of study concerned with language in its broadest sense and including cultural and behavioral features associated with language.
- macroinstructions — Plural form of macroinstruction.
- magellanic clouds — either of two irregular galactic clusters in the southern heavens that are the nearest independent star system to the Milky Way.
- management course — a course provided by an educational establishment such as a university, which teaches skills concerning the management of a company, business, etc
- manicure scissors — scissors for manicuring or trimming the nails
- manifest function — any function of an institution or other social phenomenon that is planned and intentional.
- maurice of nassau — Prince of Orange 1567-1625; Du. statesman & military leader
- messier catalogue — a catalogue of 103 nonstellar objects, such as nebulae and galaxies, prepared in 1781–86. An object is referred to by its number in this catalogue, for example the Andromeda Galaxy is referred to as M31
- microencapsulated — Encapsulated using microencapsulation.
- micromanipulators — Plural form of micromanipulator.
- miscellaneousness — Quality of being miscellaneous.
- miscommunications — Plural form of miscommunication.
- monkeygland sauce — a piquant sauce, made from tomatoes, ketchup, fruit chutney, garlic, spices, etc
- mountain sickness — illness caused by being at high altitude
- mountain viscacha — the mountain chinchilla
- munitions factory — a factory where munitions are made
- muscae volitantes — floater (def 6).
- muscle dysmorphia — a mental disorder primarily affecting males, characterized by obsessions about a perceived lack of muscularity, leading to compulsive exercising, use of anabolic steroids, etc. Compare body dysmorphic disorder.
- nasolacrimal duct — a membranous canal extending from the lacrimal sac to the nasal cavity, through which tears are discharged into the nose.
- national security — defence of a country
- natural harmonics — harmonics of a note produced on a stringed instrument by lightly touching an open or unstopped sounded string.
- natural resources — a naturally occurring source of wealth, as land or water.
- natural selection — the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations.
- natural-resources — a naturally occurring source of wealth, as land or water.
- neuropsychiatrist — A medical doctor specializing in neuropsychiatry; a medical doctor dealing with disorders that have both neurological and psychiatric features.
- nicholas bourbaki — the pseudonym of a group of mainly French mathematicians that, since 1939, has been producing a monumental work on advanced mathematics, Eléments de Mathématique
- nikolaus von cusa — Nicholas (def 1).
- non-instructional — the act or practice of instructing or teaching; education.
- nonconstitutional — of or relating to the constitution of a state, organization, etc.
- nuclear isomerism — isomerism (def 2).
- nuclear threshold — the point in war at which a combatant brings nuclear weapons into use
- nuclear-isomerism — Chemistry. the relation of two or more compounds, radicals, or ions that are composed of the same kinds and numbers of atoms but differ from each other in structural arrangement (structural isomerism) as CH 3 OCH 3 and CH 3 CH 2 OH, or in the arrangement of their atoms in space and therefore in one or more properties. Compare optical isomerism, stereoisomerism.
- nursery education — education provided at a school for young children, usually from three to five years old
- odour of sanctity — sanctimoniousness
- olympic mountains — a mountain range in NW Washington: part of the Coast Range. Highest peak: Mount Olympus, 2427 m (7965 ft)
- olympic peninsula — a large peninsula of W Washington
- opportunistically — adhering to a policy of opportunism; practicing opportunism.
- 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.