21-letter words containing e, f, o, r

necrotising fasciitis — a disease caused by the bacterium streptococcus pyogenes, in which the fasciae of the muscles or other organs become inflamed, resulting in rapid destruction of overlying tissues
neither fish nor fowl — any of various cold-blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with scales.
nellis air force base — the largest air base in the U.S. Air Force's Tactical Air Command, located near Las Vegas, Nev., and developed from what began in 1941 as a U.S. Army Air Corps field.
network filing system — (spelling) Misnomer for Network File System.
never-to-be-forgotten — unforgettable
no smoke without fire — the evidence strongly suggests something has indeed happened
nominative of address — a noun naming the person to whom one is speaking.
north pacific current — a warm current flowing eastward across the Pacific Ocean.
not for love or money — impossible to obtain by any means
of time and the river — a novel (1935) by Thomas Wolfe.
of your own free will — out of choice
one foot in the grave — near to death
open telecom platform — (communications, library) (OTP) A set of standard, open source libraries and tools for use with Erlang.
operational amplifier — a high-gain, high-input impedance amplifier, usually an integrated circuit, that can perform mathematical operations when suitably wired.
part of the furniture — If you describe someone or something as part of the furniture, you are suggesting that they have been somewhere such as their place of work for such a long time that it is hard to imagine that place without them.
partial reinforcement — the process of randomly rewarding an organism for making a response on only some of the occasions it makes it
partition coefficient — the ratio of the concentrations of a substance in two heterogenous phases in equilibrium with each other
pathfinder prospectus — a prospectus regarding the flotation of a new company that contains only sufficient details to test the market reaction
pellitory-of-the-wall — an urticaceous plant, P. diffusa, of the S and W European genus Parietaria, which grows in crevices and has long narrow leaves and small pink flowers
performance appraisal — the assessment, at regular intervals, of an employee's performance at work
performance indicator — a quantitative or qualitative measurement, or any other criterion, by which the performance, efficiency, achievement, etc of a person or organization can be assessed, often by comparison with an agreed standard or target
performance-enhancing — noting or relating to a drug or other substance used to improve one's performance in a sport or other activity requiring strength, stamina, etc.: The use of performance-enhancing steroids by athletes is banned.
peroxydisulfuric acid — persulfuric acid (def 2).
persistence of memory — a painting (1931) by Salvador Dali.
persistence of vision — the retention of a visual image for a short period of time after the removal of the stimulus that produced it: the phenomenon that produces the illusion of movement when viewing motion pictures.
piero della francesca — Piero della [pee-air-oh del-uh;; Italian pye-raw del-lah] /piˈɛər oʊ ˈdɛl ə;; Italian ˈpyɛ rɔ ˈdɛl lɑ/ (Show IPA), (Piero dei Franceschi) c1420–92, Italian painter.
place of articulation — the location at which two speech organs approach or come together in producing a speech sound, as in the contact of the tongue and the teeth to form a dental sound. Also called point of articulation. Compare articulator (def 2).
place of safety order — (in Britain) under the Children and Young Persons Act 1969, an order granted by a justice to a person or agency granting authority to detain a child or young person and take him or her to a place of safety for not more than 28 days, because of the child's actual or likely ill-treatment or neglect, etc
portuguese man-of-war — any of several large, oceanic hydrozoans of the genus Physalia, having a large, bladderlike structure with a saillike crest by which they are buoyed up and from which dangle tentacles with stinging cells.
powersoft corporation — (company) A leading vendor of client/server application development tools. In February 1994, Watcom became a wholly-owned subsidiary of Powersoft Corporation which merged with Sybase on 13 February 1995. In April 1995, the new company is the fastest growing top-ten software company and the seventh largest software company in the world. Headquarters: Concord, Massachusetts, USA.
preacquisition profit — the retained profit of a company earned before a takeover and therefore not eligible for distribution as a dividend to the shareholders of the acquiring company
prefect of discipline — a senior master in a Jesuit school or college
professional services — (job) A department of a supplier providing consultancy and programming manpower for the supplier's products.
profit-sharing scheme — a scheme employing profit-sharing; a system in which a portion of the net profit of a business is distributed to its employees, usually in proportion to their wages or their length of service
program temporary fix — (programming) (PTF) (Colloquially: Probably This Fixes) An IBM sanctioned patch, often implemented using ZAP or SUPERZAP.
promoter of the faith — devil's advocate (def 2).
psychological warfare — the use of propaganda, threats, and other psychological techniques to mislead, intimidate, demoralize, or otherwise influence the thinking or behavior of an opponent.
pull oneself together — to draw or haul toward oneself or itself, in a particular direction, or into a particular position: to pull a sled up a hill.
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.
return from interrupt — (programming) (RTI) An instruction mnemonic on many computers including the 6502 and 6800. The variant "RETI" is found among former Zilog Z80 hackers (almost nobody programs these things in assembly code anymore). The Intel 80x86 equivalent is "IRET".
reverberatory furnace — See at reverberatory (def 2).
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.
saint-maur-des-fosses — a town in N central France, near Paris, on the Marne River.

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