ExpertGlossary terms starting with F

2,087 terms

F 1) Fahrenheit- The standard scale used to measure temperature in the United States.
F Corona In solar-terrestrial terms, of the white-light corona (that is, the corona seen by the eye at a total solar eclipse), that portion which is caused by…
F factor Abbreviation for fertility factor. A bacterial plasmid that confers the ability to function as a genetic donor in conjugation. See: Hfr.
F layer See F region.
F Region In solar-terrestrial terms, the upper layer of the ionosphere, approximately 120 to 1500 km in altitude.
F Scale Abbreviation for Fujita Scale, a system of rating the intensity of tornadoes; for detailed information, see the definition for that term.
F-18 16 alpha-fluoroestradiol (Ã¢ÂÂ¦ AL-fuh-FLOOR-oh-es-truh-DY-ol) A radiolabeled substance being studied as an imaging agent in breast cancer.
F-18 FES A radiolabeled substance being studied as an imaging agent in breast cancer. F-18 FES binds to estrogen receptors and gives off radiation that can be…
F/O (1) Fiber Optic. (2) Follow-On.
F1 Abbreviation for filial generation 1. The initial hybrid generation resulting from a cross between two parents. See Fn.
F1, F2, Fn Subsequent hybrid generations, counting from the F1. Thus, for example, F4 describes the progeny of the F3, which is the progeny of the F2 generation…
F2 The second hybrid generation, produced either by intercrossing two F1 individuals, or by self-fertilizing an F1 individual. See Fn.
FA Forecast Area
FA/RD Functional Analysis/Requirements Definition.
FAA Federal Aviation Administration
FAAD Forward Area Air Defense (US Army).
FAAD C2I Forward Area Air Defense Command, Control and Intelligence.
FAADS Forward Area Air Defense System (JCS term).
FAAWC Fleet/Force Anti-Air Warfare Commander.
FAB A product of hydrolysis of an IgG antibody, consisting of the variable region with some of the constant region of a heavy chain, and an entire light chain.
Fabric The hardware that connects workstations and servers to storage devices in a networked storage architecture.
Fabricator the person or people who design and build the shell or sheet metal of the race car. Each race car is custom made for a specific type of track or even race.
Fac Facility (MILCON term).
Face Exposed surface of dam materials (earth, rockfill, or concrete), upstream and downstream. The external surface which limits the structure, see neatlines.
Face Amount The amount stated on the face of the policy that will be paid in case of death or at maturity.
Face Cards Jack, Queen or King of any suit.
Face Down Game Your first card is placed face up while the second one is placed face down.
Face Recognition A biometric modality that uses an image of the visible physical structure of an individual's face for recognition purposes.
Face Up Game Both your cards are placed face up.
Face value Face value, or par value, is the dollar value of a bond or note, generally $1,000.
facet erosion In laser diodes, a phenomenon in which a high field intensity of stimulated optical radiation causes degradation of the facets, i.e.
Facilities Structures associated with Reclamation irrigation projects, municipal and industrial water systems, power generation facilities, including all storage…
facility A fixed, mobile, or transportable structure, including (a) all installed electrical and electronic wiring, cabling, and equipment and (b) all supporting…
Facility and Structure Manmade construction. For example, resources describing buildings, fences, and related items.
facility assembly A group of interconnected equipment and transmission media uniquely identified and dedicated to a specific type of service. [T1.238-1994/97]
facility code A two-digit code (FC) used in the exchange-carrier-to-interexchange carrier (EC-to-IC) facility/service selective signaling protocol and the IC-to-EC…
facility grounding system The electrically interconnected system of conductors and conductive elements that (a) provides multiple current paths to the earth electrode subsystem…
facility group The particular group of facilities to route the call. [T1.667-1999]
facility group member The specific member of a trunk group or a multi-line hunt group. [T1.667]
Facing With reference to a wall or concrete dam, a coating of a different material, masonry or brick, for architectural or protection purposes, e.g.
FACP Forward Area Control Post (JFACC term).
FACS See: fluorescence-activated cell sorting.
facsimile An electronic means for transmitting an exact reproduction of an image using communications lines Also referred to as fax.
facsimile (FAX) A form of telegraphy for the transmission of fixed images, with or without half-tones, with a view to their reproduction in a permanent form.
facsimile converter In a facsimile receiver, a device that changes the signal modulation from frequency-shift keying (FSK) to amplitude modulation (AM). 2.
facsimile frequency shift At any point in a frequency-shift facsimile system, the numerical difference between the frequency that corresponds to a white signal and the frequency…
facsimile picture signal In facsimile systems, the baseband signal that results from the scanning process.
facsimile receiver In a facsimile system, the equipment that converts the facsimile picture signal into a recorded copy.
facsimile recorder In a facsimile receiver, the device that performs the final conversion of the facsimile picture signal to an image of the object, i.e.
facsimile signal level In a facsimile system, the signal level at any point in the system. Note 1: The facsimile signal level is used to establish the operating levels.
facsimile transceiver In a facsimile system, the equipment that sends and receives facsimile signals.
facsimile transmission The electronic transmission by wire of document images for reproduction at remote locations having compatible equipment.
facsimile transmitter In a facsimile system, the equipment that converts the baseband picture signals, i.e.
FACSPMF Federal Agency Computer Security Program Managers Forum.
FACT Act (Fair and Accurate Credit Transactions Act) Designed to help consumers check their credit reports for accuracy and detect identity theft early, the FACT Act gives every consumer the right to request…
Facto In fact; in or by the law.
Factor income Labor and property earnings from current production. In national income, it is the incomes accruing to labor and property of U.S.
Factor incomes See Factor income
Factor of safety The ratio of the ultimate strength of the material to the allowable or working stress.
factorial mating A mating scheme in which each male parent is mated with each female parent. Made possible in animals by means of in vitro embryo production.
Factory A term designating the "Big Three" auto manufacturers: General Motors (GM), Ford and DaimlerChrysler.
factory pattern A pattern of class definition that is used as a generator of instances of other classes.
Facula In solar-terrestrial terms, a bright region of the photosphere seen in white light, seldom visible except near the solar limb.
Faculae Bright blotches on the surface of the Sun that emit more radiation than surrounding areas and increase
facultative anaerobe An organism that will grow under either aerobic or anaerobic conditions.
Facultative ponds Ponds having an aerobic zone on the top and an anaerobic zone on the bottom.
Facultative wetland vegetation species A species that can occur both in wetlands and uplands.
FAD See: flavin adenine dinucleotide.
Fade this means to cover all or part of the bank bet, also called cover or cover the bank.
fade margin A design allowance that provides for sufficient system gain or sensitivity to accommodate expected fading, for the purpose of ensuring that the required…
FADEC Full-Authority Electronic Controls.
fading In a received signal, the variation (with time) of the amplitude or relative phase, or both, of one or more of the frequency components of the signal.
fading distribution The probability distribution that signal fading will exceed a given value relative to a specified reference level.
fading margin Synonym fade margin.
FAFB Falcon AFB, CO.
FAFBR Falcon AFB Regulation
Fahrenheit (abbrev. F) The standard scale used to measure temperature in the United States.
Fahrenheit (F) Unit of temperature. Degrees Fahrenheit equals (9/5)x(degrees Celsius)+(32).
fail See failure, graceful degradation.
fail safe Of a device, the capability to fail without detriment to other devices or danger to personnel. 2.
fail soft [The] selective termination of affected nonessential processing, when hardware or software failure is determined to be imminent. [INFOSEC-99]
fail-safe operation Operation that ensures that a failure of equipment, process, or system does not propagate beyond the immediate environs of the failing entity. 2.
failback In a failover cluster or server cluster, the process of returning a clustered service or application to its preferred node after the node has failed and…
failback policy A set of parameters that an administrator can set for a failover cluster or server cluster that affect failback operations.
failed A state that applies to a resource or a node in a failover cluster or server cluster.
failed filer The filer in a clustered pair that has ceased operating. It remains the failed filer until giveback succeeds. See also "takeover."
failover A cluster's ability to redirect requests from one server to another. Failover occurs when a user tries to access an application on an unavailable server…
failover cluster A group of computers, known as nodes, or terminal servers working together as a single system to ensure that mission-critical applications and resources…
Failover Cluster Management snap-in A Microsoft Management Console snap-in (graphical user interface) through which you can configure a failover cluster and its nodes, its clustered services…
Failure An incident resulting in the uncontrolled release of water from a dam. Destroyed and made useless, ceases to function as a dam.
failure access [An] Unauthorized access to data resulting from a hardware or software failure. [INFOSEC-99]
failure control [The methods] used to detect imminent hardware or software failure and provide fail safe or fail soft recovery. [INFOSEC-99]
failure of others A secondary test of patentability relevant to the issue of whether an invention is obvious is whether others have failed to come up with the solution…
Failure potential assessment A judgment of the potential for failure of an essential element within the expected life of the project.
Failure to Acquire (FTA) Failure of a biometric system to capture and/or extract usable information from a biometric sample.
Failure to Enroll (FTE) Failure of a biometric system to form a proper enrollment reference for an end user.
Fair It is usually used at night to describe less than 3/8 opaque clouds, no precipitation, no extremes of visibility, temperature or winds.
Fair and Accurate Credit Transactions Act of 2003 (FACT Act or FACTA) The purpose of this Act is to help consumers protect their credit identities and recover from identity theft.
Fair and Accurate Credit Transactions Act of 2003 (FACT Act,FACTA) The purpose of this Act is to help consumers protect their credit identities and recover from identity theft.
Fair Collection Practices Act A federal law supplemented by Maine law, which gives rules and regulations governing debt collectors. Federal Law: 15 U.S.C.§ 1601 et seq.