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21-letter words containing c, o, e, f, i

  • purple-fringed orchid — either of two orchids, Habenaria fimbriata or H. psycodes, of eastern North America, having a cluster of fragrant purple flowers with a fringed lip.
  • purple-fringed orchis — either of two North American orchids (Habenaria psycodes and H. fimbriata) with purple-fringed flowers
  • radius of convergence — a positive number so related to a given power series that the power series converges for every number whose absolute value is less than this particular number.
  • range of significance — the set of subjects for which a given predicate is intelligible
  • reconnaissance flight — a flight made by an aircraft in order to obtain military information about a particular place
  • record of achievement — a statement of the personal and educational development of each pupil
  • reinforcement therapy — a behavior modification technique in which appropriate behavior is strengthened through systematic reinforcement.
  • road traffic accident — an accident involving vehicles
  • rutherford scattering — the scattering of an alpha particle through a large angle with respect to the original direction of motion of the particle, caused by an atom (Rutherford atom) with most of the mass and all of the positive electric charge concentrated at a center or nucleus.
  • sales finance company — a finance company that purchases, at a discount, installment contracts from dealers or that finances retail sales.
  • saponification number — the number of milligrams of potassium hydroxide required to saponify one gram of a given ester, especially a glyceride.
  • satisficing behaviour — the form of behaviour demonstrated by firms who seek satisfactory profits and satisfactory growth rather than maximum profits
  • schema definition set — (SDS) Something in Portable Common Tool Environment.
  • school of the soldier — an institution where instruction is given, especially to persons under college age: The children are at school.
  • self-characterization — portrayal; description: the actor's characterization of a politician.
  • silicon tetrafluoride — a colorless, fuming gas, SiF 4 , used chiefly in the manufacture of fluosilicic acid.
  • south pacific current — an ocean current that flows E in the South Pacific Ocean parallel to the Antarctic Circumpolar Current.
  • stare one in the face — to be glaringly obvious or imminent
  • stations of the cross — a series of 14 crosses, often accompanied by 14 pictures or carvings, arranged in order around the walls of a church, to commemorate 14 supposed stages in Christ's journey to Calvary
  • sun protection factor — SPF.
  • surface acoustic wave — an acoustic wave generated on the surface of a piezoelectric substrate: used as a filter in electronic circuits
  • surface friction drag — the part of the drag on a body moving through a fluid that is dependent on the nature of the surface of the body
  • surface of projection — the surface upon which an image or a set of points is projected.
  • surface of revolution — a surface formed by revolving a plane curve about a given line.
  • synchronized shifting — gear shifting in which the gears to be meshed are made to rotate at the same speed.
  • take/come into effect — If a law or policy takes effect or comes into effect at a particular time, it officially begins to apply or be valid from that time. If it remains in effect, it still applies or is still valid.
  • teacher certification — official qualifications for educators
  • tetrabromofluorescein — eosin (def 1).
  • the acting profession — actors considered as a group
  • the microsoft network — (networking)   (MSN) Microsoft's ISP and online content service, launched in October 1996. Not to be confused with Microsoft Networking. MSN was originally based on custom software and protocols, however Microsoft saw the error of their ways and adopted Internet standards. MSN now provides standard WWW and email facilities, albeit with Microsoft's Internet Explorer web-browser and the Outlook Express email software. The service also provides "Community Services" including newsgroups, forums, and chat.
  • the origin of species — (On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) a treatise (1859) by Charles Darwin setting forth his theory of evolution.
  • the rock of gibraltar — a limestone promontory at the tip of S Spain
  • the shipping forecast — a radio broadcast made by the BBC of weather reports and forecasts for the seas around the British Isles
  • the stationery office — (in the UK) the company that supplies the civil service with all its office supplies, machinery, printing and binding, etc
  • thermoelectric effect — the production of an electromotive force in a thermocouple.
  • tide-generating force — the difference between the force of gravity exerted by the moon or the sun on a particle of water in the ocean and that exerted on an equal mass of matter at the centre of the earth. The lunar tide-generating forces are about 2.2 times greater than are the solar ones
  • to cross your fingers — If you cross your fingers, you put one finger on top of another and hope for good luck. If you say that someone is keeping their fingers crossed, you mean they are hoping for good luck.
  • to fly in the face of — If an action or belief flies in the face of accepted ideas or rules, it seems to completely oppose or contradict them.
  • to play second fiddle — If you play second fiddle to someone, your position is less important than theirs in something that you are doing together.
  • traffic control tower — an elevated structure for the visual observation and control of the air and ground traffic at an airport
  • tumor necrosis factor — a protein, produced in humans and other animals, that is destructive to cells showing abnormally rapid growth: identical with cachectin. Abbreviation: TNF.
  • uniform resource name — (web)   (URN, previously Uniform/Universal Resource Number) 1. Any URI which is not a URL. 2. A particular scheme which is currently (1991-4) under development by the IETF, which should provide for the resolution using Internet protocols of names which have a greater persistence than that currently associated with Internet host names or organisations (as used in URLs). Uniform Resource Names will be URI schemes that improve on URLs in reliability over time, including authenticity, replication, and high availability. When defined, a URN in sense 1 will be an example of a URN in sense 2.
  • universe of discourse — the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm.
  • university of iceland — (body, education)   The Home of Fjolnir.
  • volumetric efficiency — the ratio of fluid delivered by a piston or ram pump per stroke to the displacement volume of the piston or ram
  • volunteers of america — a religious reform and relief organization, similar to the Salvation Army, founded in New York City in 1896 by Ballington Booth, son of William Booth, the founder of the Salvation Army. Abbreviation: VOA.
  • vote of no confidence — A vote of no confidence is a vote in which members of a group are asked to indicate that they do not support the person or group in power, usually the government.
  • warm silence software — A small company run by(?) Robin Watts, producing software for the Acorn Archimedes.
  • water of constitution — water present in a molecule that cannot be removed without disrupting the molecule.
  • with the exception of — except for, save
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