15-letter words containing a, n, u, r
- ocean greyhound — a fast ship, esp a liner
- octanitrocubane — (organic compound) A high explosive derived from cubane.
- odd permutation — a permutation of a set of n elements, x 1 , x 2 , …, xn, which permutes the product of all differences of the form (xi – xj), where i is less than j, into the negative of the product.
- off one's guard — to keep safe from harm or danger; protect; watch over: to guard the ruler.
- omnium gatherum — a miscellaneous collection.
- omnium-gatherum — a miscellaneous collection.
- one's last hour — the time of one's death
- ordinal numbers — Also called ordinal numeral. any of the numbers that express degree, quality, or position in a series, as first, second, and third (distinguished from cardinal number).
- ordnance survey — mapmaking agency
- organomagnesium — pertaining to or noting an organic compound, especially an organic halide, containing magnesium linked to carbon.
- organomercurial — an organic compound containing mercury
- out of thin air — suddenly and unexpectedly
- out of training — become unfit
- out on your ear — If someone says that you will be out on your ear, they mean that you will be forced to leave a job, an organization or a place suddenly.
- outdoorsmanship — a person devoted to outdoor sports and recreational activities, as hiking, hunting, fishing, or camping.
- outline drawing — a drawing consisting only of external lines
- outward journey — a journey leaving for a particular destination (as opposed top one returning home)
- outward-looking — looking beyond oneself; open-minded and reaching out to other people, organizations, etc
- over-accentuate — to give emphasis or prominence to.
- over-enthusiasm — absorbing or controlling possession of the mind by any interest or pursuit; lively interest: He shows marked enthusiasm for his studies.
- over-population — to fill with an excessive number of people, straining available resources and facilities: Expanding industry has overpopulated the western suburbs.
- over-regulation — a law, rule, or other order prescribed by authority, especially to regulate conduct.
- overcommunicate — to communicate excessively
- overcultivation — the act or art of cultivating.
- overspeculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- overstimulation — to rouse to action or effort, as by encouragement or pressure; spur on; incite: to stimulate his interest in mathematics.
- overutilization — to put to use; turn to profitable account: to utilize a stream to power a mill.
- overzealousness — too zealous: overzealous for reform.
- ozark mountains — an eroded plateau in S Missouri, N Arkansas, and NE Oklahoma. Area: about 130 000 sq km (50 000 sq miles)
- paid-in surplus — surplus paid in by purchasers of stock certificates sold at a premium.
- pair production — Physics. the simultaneous creation of a particle and its antiparticle by a nucleus or particle in an excited state, as when a photon is absorbed.
- pandorae fretum — an area in the southern hemisphere of Mars.
- paralinguistics — the study of paralanguage.
- parallel cousin — a cousin who is the child either of one's mother's sister or of one's father's brother.
- parent compound — a compound from which derivatives may be obtained.
- parent language — an earlier language from which another is derived.
- part of fortune — the celestial longitude of the moon plus the celestial longitude of the ascendant minus the celestial longitude of the sun: said to connote an area of life through which one achieves emotional satisfaction.
- partial denture — an artificial replacement of one or several of the teeth (partial denture) or all of the teeth (full denture) of either or both jaws; dental prosthesis.
- patio furniture — furniture in an area adjoining a house, esp one that is paved and used for outdoor activities
- pay as you earn — a method of paying tax in which the tax is taken off your wages before they are paid to you
- peak production — the maximum production
- pearly nautilus — nautilus (def 1).
- penal servitude — imprisonment together with hard labor.
- penshurst place — a 14th-century mansion near Tunbridge Wells in Kent: birthplace of Sir Philip Sidney; gardens laid out from 1560
- perfluorocarbon — a fluorocarbon consisting only of fluorine and carbon atoms
- perforating gun — A perforating gun is a device used to make holes in oil and gas wells in preparation for production.
- pergamentaceous — (esp of plants) resembling parchment, whether in texture or composition
- perpendicularly — vertical; straight up and down; upright.
- personal column — The personal column in a newspaper or magazine contains messages for individual people and advertisements of a private nature.
- personal injury — injury to an individual