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19-letter words containing o, f

  • dereliction of duty — Dereliction of duty is deliberate or accidental failure to do what you should do as part of your job.
  • developable surface — a surface that can be flattened onto a plane without stretching or compressing any part of it, as a circular cone.
  • diamond ring effect — a phenomenon, sometimes observed immediately before and after a total eclipse of the sun, in which one of Baily's beads is much brighter than the others, resembling a diamond ring around the moon.
  • diamond-leaf laurel — a tree, Pittosporum rhombifolium, of Australia, having coarsely toothed, oval or diamond-shaped leaves and white flowers, widely planted as an ornamental in the southwestern U.S.
  • dictionary of names — a dictionary of given names that indicates whether a name is usually male, female, or unisex and often includes origins as well as meanings; for example, as by indicating that Evangeline, meaning “good news,” comes from Greek. Used primarily as an aid in selecting a name for a baby, dictionaries of names may also include lists of famous people who have shared a name and information about its current popularity ranking.
  • difference equation — (mathematics)   A relation between consecutive elements of a sequence. The first difference is D u(n) = u(n+1) - u(n) where u(n) is the nth element of sequence u. The second difference is u(n+2) + a u(n+1) + b u(n) = 0 can be converted to a difference equation (in this case, a second order linear difference equation): D2 u(n) + p D u(n) + q u(n) = 0 and vice versa. a, b, p, q are constants.
  • diffraction grating — a band of equidistant, parallel lines, usually more than 5000 per inch (2000 per centimeter), ruled on a glass or polished metal surface for diffracting light to produce optical spectra.
  • diffraction pattern — the phenomenon exhibited by wave fronts that, passing the edge of an opaque body, are modulated, thereby causing a redistribution of energy within the front: it is detectable in light waves by the presence of a pattern of closely spaced dark and light bands (diffraction pattern) at the edge of a shadow.
  • director of studies — a member of staff at an educational institution who has responsibility for overseeing the curriculum
  • disciples of christ — a Christian denomination, founded in the U.S. by Alexander Campbell in the early part of the 19th century, that rejects all creeds, holds the Bible as a sufficient rule of faith and practice, administers baptism by immersion, celebrates the Lord's Supper every Sunday, and has a congregational polity.
  • do well for oneself — to thrive or succeed
  • doctrine of descent — the theory that animals and plants arose by descent from previously existing organisms; theory of evolution
  • draw someone's fire — to attract the criticism or censure of someone
  • drink the health of — to salute or celebrate with a toast
  • elastic deformation — In elastic deformation a material changes shape when a stress is applied to it but goes back to its original state when the stress is removed.
  • electromotive force — a source of energy that can cause a current to flow in an electrical circuit or device
  • electrostatic field — an electric field associated with static electric charges
  • end of transmission — (character)   (EOT) The mnemonic for ASCII character 4.
  • engineering factory — a factory where engineering products are made
  • entry qualification — the qualifications and conditions required to join an organization, club, etc
  • essence of bergamot — a fragrant essential oil from the fruit rind of this plant, used in perfumery and some teas (including Earl Grey)
  • estate of the realm — an order or class of persons in a political community, regarded collectively as a part of the body politic: usually regarded as being the lords temporal (peers), lords spiritual, and commons
  • expeditionary force — An expeditionary force is a group of soldiers who are sent to fight in a foreign country.
  • factitious disorder — any of various syndromes, as Münchausen syndrome, characterized by physical or psychological symptoms intentionally produced by a person and under voluntary control.
  • facultative apomict — a plant that can reproduce sexually or asexually.
  • fall in love (with) — to begin to feel love (for)
  • fallacy of division — the fallacy of inferring that a property of the whole is also a property of parts or members of the whole (opposed to fallacy of composition).
  • false consciousness — a Marxist theory that people are unable to see things, especially exploitation, oppression, and social relations, as they really are; the hypothesized inability of the human mind to develop a sophisticated awareness of how it is developed and shaped by circumstances.
  • family practitioner — medical specialization in general practice, requiring training beyond that of general practice and leading to board certification.
  • farmers cooperative — an organization of farmers for marketing their products or buying supplies.
  • fashion coordinator — a person in a department store or other establishment who coordinates activities centered upon or related to fashion, as fashion themes, shows, displays, and promotion.
  • father of the house — (in Britain) the longest-serving member of the House of Commons
  • fault tolerant unix — (operating system)   (FTX) Stratus's own Unix System V Release 4 multiprocessor operating system. In 2016, FTX is supported but no longer developed. FTX was one of three operating systems supplied by Stratus on their hardware, the other two, HP-UX and VOS, were the more common choices, FTX was only sold on an exceptional basis. Early FTX 3.x releases used an in-house virtual disk layer (VDL) driver, but later releases switched to a version of Veritas VxVM. FTX supported many of the proprietary communications boards (ISDN, serial, parallel, X.25, etc.).
  • feast of dedication — Hanukkah.
  • feast one's eyes on — to look at with pleasure or admiration
  • feather-duster worm — any tube-dwelling polychaete worm of the families Sabellidae and Serpulidae, the numerous species having a crown of feathery tentacles used in feeding and respiration.
  • february revolution — Russian Revolution (def 1).
  • february-revolution — Also called February Revolution. the uprising in Russia in March, 1917 (February Old Style), in which the Czarist government collapsed and a provisional government was established.
  • feel (like) oneself — to feel normally healthy, fit, etc.
  • feel in one's bones — Anatomy, Zoology. one of the structures composing the skeleton of a vertebrate. the hard connective tissue forming the substance of the skeleton of most vertebrates, composed of a collagen-rich organic matrix impregnated with calcium, phosphate, and other minerals.
  • feel strongly about — to have decided opinions concerning
  • fellow countrywoman — a fellow countrywoman is a female citizen of the same state as the person speaking, writing, or being referred to
  • fellow-servant rule — the common-law rule that the employer is not liable to an employee for injuries resulting from the negligence of a fellow employee.
  • female circumcision — clitoridectomy.
  • female impersonator — a male performer who dresses as and impersonates women.
  • fernando de noronha — an island in the S Atlantic, about 125 miles (200 km) E of easternmost tip of Brazil: a Brazilian penal colony. 10 sq. mi. (26 sq. km).
  • ferrite core memory — (storage)   (Or "core") An early form of non-volatile storage built (by hand) from tiny rings of magnetisable material threaded onto very fine wire to form large (e.g. 13"x13" or more) rectangluar arrays. Each core stored one bit of data. These were sandwiched between printed circuit boards(?). Sets of wires ran horizontally and vertically and where a vertical and horizontal wire crossed, a core had both wires threaded through it. A single core could be selected and magnetised by passing sufficient current through its horizontal and vertical wires. A core would retain its magnetisation until it was re-magnetised. The two possible polarities of magnetisation were used to represent the binary values zero and one. A third "sense" wire, passed through the core and, if the magnetisation of the core was changed, a small pulse would be induced in the sense wire which could be detected and used to deduce the core's original state. Some core memory was immersed in a bath of heated oil to improve its performance. Core memory was rendered obsolete by semiconductor memory. For example, the 1970s-era NCR 499 had two boards, each with 16 kilobytes of core memory.
  • fight to the finish — A fight to the finish is one in which one of the people or groups fighting is killed or completely defeated.
  • fighter-interceptor — a fighter plane used for the defense of a region against air attack, especially by attacking bombers.
  • financial ombudsman — any of five British ombudsmen: the Banking Ombudsman, set up in 1986 to investigate complaints from bank customers; the Building Society Ombudsman, set up in 1987 to investigate complaints from building society customers; the Insurance Ombudsman, set up in 1981 to investigate complaints by policyholders (since 1988 this ombudsman has also operated a Unit Trust Ombudsman scheme); the Investment Ombudsman set up in 1989 to investigate complaints by investors (the Personal Investment Authority Ombudsman is responsible for investigating complaints by personal investors); and the Pensions Ombudsman, set up in 1993 to investigate complaints regarding pension schemes
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