18-letter words containing f, e, o, r, s, v
- affective disorder — any mental disorder, such as depression or mania, that is characterized by abnormal disturbances of mood
- antivirus software — (tool) Programs to detect and remove computer viruses. The simplest kind scans executable files and boot blocks for a list of known viruses. Others are constantly active, attempting to detect the actions of general classes of viruses. antivirus software should always include a regular update service allowing it to keep up with the latest viruses as they are released.
- axis of revolution — an axis in a plane, about which an area is revolved to form a solid of revolution.
- biodiversification — the process by which the diversity of plants or animals develops or is increased within a particular region or group of organisms.
- bird's-foot violet — a North American violet (Viola pedata) having divided leaves and large blue or purple flowers
- board of governors — a group of people who oversee the running of a school
- congress of vienna — the European conference held at Vienna from 1814–15 to settle the territorial problems left by the Napoleonic Wars
- constructive proof — (mathematics) A proof that something exists that provides an example or a method for actually constructing it. For example, for any pair of finite real numbers n < 0 and p > 0, there exists a real number 0 < k < 1 such that f(k) = (1-k)*n + k*p = 0. A constructive proof would proceed by rearranging the above to derive an equation for k: k = 1/(1-n/p) From this and the constraints on n and p, we can show that 0 < k < 1. A few mathematicians actually reject *all* non-constructive arguments as invalid; this means, for instance, that the law of the excluded middle (either P or not-P must hold, whatever P is) has to go; this makes proof by contradiction invalid. See intuitionistic logic. Constructive proofs are popular in theoretical computer science, both because computer scientists are less given to abstraction than mathematicians and because intuitionistic logic turns out to be an appropriate theoretical treatment of the foundations of computer science.
- curvature of space — (in relativity) a property of space near massive bodies in which their gravitational field causes light to travel along curved paths.
- deliver oneself of — to speak with deliberation or at length
- fischer von erlach — Johann Bernhard [yaw-hahn bern-hahrt] /ˈyɔ hɑn ˈbɛrn hɑrt/ (Show IPA), 1656–1723, Austrian architect.
- fissure of sylvius — lateral fissure.
- for heaven's sake! — a mild exclamation of surprise, annoyance, etc.
- forced perspective — the use of objects or images that are larger or smaller than they should be, to suggest that they are nearer or further away than they really are
- foreign investment — investment from foreign countries
- give a person five — to greet or congratulate someone by slapping raised hands
- have eyes only for — the organ of sight, in vertebrates typically one of a pair of spherical bodies contained in an orbit of the skull and in humans appearing externally as a dense, white, curved membrane, or sclera, surrounding a circular, colored portion, or iris, that is covered by a clear, curved membrane, or cornea, and in the center of which is an opening, or pupil, through which light passes to the retina.
- isidore of seville — Saint (Isidorus Hispalensis) a.d. c570–636, Spanish archbishop, historian, and encyclopedist.
- margaret of valois — ("Queen Margot") 1533–1615, 1st wife of Henry IV of France: queen of Navarre; patron of science and literature (daughter of Henry II of France and Catherine de' Medici).
- non-self-governing — governed by itself or having self-government, as a state or community; independent.
- 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
- overdraft interest — interest charged on money withdrawn in excess of the credit balance of a bank or building society account
- quality of service — (communications, networking) (QoS) The performance properties of a network service, possibly including throughput, transit delay, priority. Some protocols allow packets or streams to include QoS requirements.
- recursive function — a function defined in terms of the repeated application of a number of simpler functions to their own values, by specifying a base clause and a recursion formula
- silvery cinquefoil — any of several plants belonging to the genus Potentilla, of the rose family, having yellow, red, or white five-petaled flowers, as P. reptans (creeping cinquefoil) of the Old World, or P. argentea (silvery cinquefoil) of North America.
- to play favourites — to display favouritism
- vermilion rockfish — a scarlet-red rockfish, Sebastes miniatus, inhabiting waters along the Pacific coast of North America, important as a food fish.
- visiting professor — a professor from another institution invited to teach at a university or college for a limited period, usually for a semester or one academic year.
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