16-letter words containing a, u, n, i
- occupation layer — (on an archaeological site) a layer of remains left by a single culture, from which the culture can be dated or identified.
- once upon a time — at one time in the past; formerly: I was a farmer once; a once powerful nation.
- one-way function — (cryptography, mathematics) A function which is easy to compute but whose inverse is very difficult to compute. Such functions have important applications in cryptography, specifically in public-key cryptography. See also: trapdoor function.
- oneida community — a society of religious perfectionists established by John Humphrey Noyes, in 1848 at Oneida, N.Y., on the theory that sin can be eliminated through social reform: dissolved and reorganized in 1881 as a joint-stock company.
- online thesaurus — a thesaurus or dictionary of words with the same or nearly the same meanings, or synonyms, and their opposites, or antonyms, such as Thesaurus.com, available on the Internet or the World Wide Web, accessed through a web browser, and used by entering a query term into a search box on the site. An online thesaurus provides immediate electronic access to lists of alternate terms for the queried word, covering its various shades of meaning: This online thesaurus showed me that smart, as an adjective, not only means intelligent, but also stylish, or lively, and gave long lists of other words for each meaning.
- open punctuation — punctuation characterized by sparing use of stops, esp of the comma
- operating budget — money allocated to a project
- operating manual — a leaflet of instructions on how to use something (such as an electrical appliance, etc)
- optical illusion — something that deceives by producing a false or misleading impression of reality.
- ordinary jubilee — the celebration of any of certain anniversaries, as the twenty-fifth (silver jubilee) fiftieth (golden jubilee) or sixtieth or seventy-fifth (diamond jubilee)
- organized labour — labour carried out by workers in trade unions, or the workers themselves
- osculating plane — the plane containing the circle of curvature of a point on a given curve.
- ostentatiousness — characterized by or given to pretentious or conspicuous show in an attempt to impress others: an ostentatious dresser.
- over-communicate — to impart knowledge of; make known: to communicate information; to communicate one's happiness.
- over-cultivation — the act or art of cultivating.
- over-speculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- overaccumulation — Accumulation of too much.
- overcautiousness — the quality or state of being too cautious, wary, or careful
- overenthusiastic — full of or characterized by enthusiasm; ardent: He seems very enthusiastic about his role in the play.
- overurbanization — the act or fact of urbanizing, or taking on the characteristics of a city: Urbanization has led to more air pollution and increasing childhood asthma.
- oxidation number — the state of an element or ion in a compound with regard to the electrons gained or lost by the element or ion in the reaction that formed the compound, expressed as a positive or negative number indicating the ionic charge of the element or ion.
- pacific sturgeon — a dark gray sturgeon, Acipenser transmontanus, inhabiting marine and fresh waters along the northwestern coast of North America, valued as a food and sport fish.
- paediatric nurse — a nurse who specializes in the care of children
- paint-by-numbers — formulaic; showing no original thought or creativity
- painted trillium — a North American trillium, Trillium undulatum, having white flowers streaked with pink or purple.
- pairs tournament — an event in a sport such as tennis or darts open to pairs of competitors
- palmer peninsula — former name of Antarctic Peninsula.
- palomar mountain — mountain in SW Calif., near San Diego: site of an astronomical observatory: 6,140 ft (1,871 m)
- pancreatic juice — a thick, colorless, very alkaline fluid secreted by the pancreas, containing enzymes that break down protein, fat, and starch.
- panel discussion — a formal discussion before an audience for which the topic, speakers, etc., have been selected in advance.
- papua new guinea — an independent republic in the W Pacific Ocean, comprising the E part of New Guinea and numerous near-lying islands, including the Bismarck Archipelago, the Admiralty Islands, the Trobriand Islands, and Bougainville and Buka in the Solomon Islands: a former Australian Trusteeship Territory; independent since 1975; member of the Commonwealth of Nations. 178,260 sq. mi. (461,693 sq. km). Capital: Port Moresby.
- partial function — A function which is not defined for all arguments of its input type. E.g. f(x) = 1/x if x /= 0. The opposite of a total function. In denotational semantics, a partial function f : D -> C may be represented as a total function ft : D' -> lift(C) where D' is a superset of D and ft x = f x if x in D ft x = bottom otherwise where lift(C) = C U bottom. Bottom (LaTeX \perp) denotes "undefined".
- passive immunity — immunity resulting from the injection of antibodies or sensitized lymphocytes from another organism or, in infants, from the transfer of antibodies through the placenta or from colostrum.
- patent ambiguity — uncertainty of meaning created by the obscure or ambiguous language appearing on the face of a written instrument.
- paulinus of nola — Saint. ?353–431 ad, Roman consul and Christian poet; bishop of Nola (409–431). Feast day: June 22
- peninsular state — Florida (used as a nickname).
- pentothal sodium — thiopental sodium
- perpendicularity — vertical; straight up and down; upright.
- perpetual motion — the motion of a theoretical mechanism that, without any losses due to friction or other forms of dissipation of energy, would continue to operate indefinitely at the same rate without any external energy being applied to it.
- personal tuition — private tuition
- personality cult — deliberately cultivated adulation of a person, esp a political leader
- peruvian rhatany — See under rhatany (def 1).
- phase modulation — radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal.
- photocoagulation — a surgical technique using an intense beam of light from a laser or a xenon-arc bulb to seal blood vessels or coagulate tissue, used primarily in ophthalmology to repair detached retinas or to treat certain kinds of retinopathy.
- pineal apparatus — a median outgrowth of the roof of the diencephalon in vertebrates that in some develops into the pineal eye and in others into the pineal gland.
- piscis austrinus — a small constellation in the S hemisphere lying between Aquarius and Grus and containing the first-magnitude star Fomalhaut
- place in the sun — (often initial capital letter) the star that is the central body of the solar system, around which the planets revolve and from which they receive light and heat: its mean distance from the earth is about 93 million miles (150 million km), its diameter about 864,000 miles (1.4 million km), and its mass about 330,000 times that of the earth; its period of surface rotation is about 26 days at its equator but longer at higher latitudes.
- platinum-iridium — (standard) A standard, against which all others of the same category are measured. Usage: silly. The notion is that one of whatever it is has actually been cast in platinum-iridium alloy and placed in the vault beside the Standard Kilogram at the International Bureau of Weights and Measures near Paris, as the bar defining the standard metre once was. "This garbage collection algorithm has been tested against the platinum-iridium cons cell in Paris." Compare golden.
- pleasure-seeking — always looking for pleasure
- pneumatic trough — a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.