19-letter words containing f, r, i, t, n

deflationary spiral — Geometry. a plane curve generated by a point moving around a fixed point while constantly receding from or approaching it.
dereliction of duty — Dereliction of duty is deliberate or accidental failure to do what you should do as part of your job.
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.
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.
differential backup — (operating system) A kind of backup that copies all files that have changed since the last full backup. Each differential backup will include all files in previous differential backups since the full backup so to restore a version of a file, you only need to search the full backup and the relevant differential backup. Some systems support differential backup by associating an "Archive" flag with each file and setting this flag whenever the file is modified to indicate that it should be included in the next backup. A differential backup does not change this flag, whereas an incremental backup resets it.
differential driver — (hardware) An electronic device (commonly an integrated circuit), containing two amplifiers, used to drive a differential line.
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.
disenfranchisements — Plural form of disenfranchisement.
distinctive feature — a feature of the sound system of a language that serves as the crucial distinguishing mark between two phonemes, as the distinctive feature of voicing, which distinguishes b from p in English, or nasality, which distinguishes m from b and p.
doctrine of descent — the theory that animals and plants arose by descent from previously existing organisms; theory of evolution
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.
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
expeditionary force — An expeditionary force is a group of soldiers who are sent to fight in a foreign country.
experimenter effect — the influence of an experimenter's expectations on his results
fair-weather friend — a person who cannot be relied on in situations of hardship or difficulty
family practitioner — medical specialization in general practice, requiring training beyond that of general practice and leading to board certification.
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.
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.).
fault tree analysis — (programming) A form of safety analysis that assesses hardware safety to provide failure statistics and sensitivity analyses that indicate the possible effect of critical failures.
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.
female impersonator — a male performer who dresses as and impersonates women.
fertility treatment — the application of any of various methods or procedures to a woman or man to increase the woman's chances of conceiving a baby
fighter-interceptor — a fighter plane used for the defense of a region against air attack, especially by attacking bombers.
figurative language — language that contains or uses figures of speech, especially metaphors.
finds its/their way — If something finds its way somewhere, it comes to that place, especially by chance.
finger on the pulse — If you have your finger on the pulse of something, you know all the latest opinions or developments concerning it.
finite differencing — strength reduction
first international — a socialistic organization (1864–76) formed to unite and promote the interests of workers throughout the world. Compare international (def 6).
first law of motion — any of three laws of classical mechanics, either the law that a body remains at rest or in motion with a constant velocity unless an external force acts on the body (first law of motion) the law that the sum of the forces acting on a body is equal to the product of the mass of the body and the acceleration produced by the forces, with motion in the direction of the resultant of the forces (second law of motion) or the law that for every force acting on a body, the body exerts a force having equal magnitude and the opposite direction along the same line of action as the original force (third law of motion or law of action and reaction)
first person plural — a grammatical category of pronouns and verbs used by the speaker to refer to or talk about himself together with others
first-in, first-out — an inventory plan that assumes that items purchased first will be sold first and that by valuing inventory items at the price of the most recent purchases, inventory values will be comparable to any rise in prices. Abbreviation: FIFO . Compare last-in, first-out.
first-sale doctrine — a legal principle allowing the purchaser of a lawfully made copy of a copyright-protected work to sell or give away that copy without permission but not to reproduce it.
fixed cost contract — a contract in which the costs do not vary
fixed exchange rate — finance: set rate of exchange
fixed-term contract — a contract for a particular and fixed period
fixed-wing aircraft — a heavier-than-air aircraft capable of flight whose lift is generated not by wing motion relative to the aircraft, but by forward motion through the air
floating restaurant — a boat or ship that has been converted for use as a restaurant
florida velvet bean — a tropical vine, Mucuna deeringiana, of the legume family, having showy, purple flowers in drooping clusters and black, hairy pods: grown as an ornamental.
follow-up interview — a second interview following an initial interview
for crying out loud — exasperation
for the life of one — the condition that distinguishes organisms from inorganic objects and dead organisms, being manifested by growth through metabolism, reproduction, and the power of adaptation to environment through changes originating internally.
forensic accountant — an accountant who specializes in applying accountancy skills to the purposes of the law
forensic psychiatry — the use of psychiatric knowledge and techniques in questions of law, as in determining legal insanity.
fortification agate — an agate, used as a gem, having polygonal banding such that it suggests the plan of a bastion.

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