digital facsimile equipmentFacsimile equipment that digitally encodes the picture signal, i.e., encodes the baseband signal resulting from scanning the object.
digital filterA filter (usually linear), in discrete time, that is normally implemented through digital electronic computation.
Digital FingerprintA fixed-length hash code that uniquely represents the binary content of a file.
digital frequency modulationThe transmission of digital data by frequency modulation of a carrier, as in binary frequency-shift keying.
Digital Geospatial Metadata (DGM)DGM was approved in June 1994 by the Federal Geographic Data Committee (FGDC). DGM describes the specifications for the content, quality, condition, and…
Digital Line Graph (DLG)Digital Line Graph files from the U.S. Geological Survey (USGS), including data from the base map categories such as transportation, hydrography…
digital linkA means of digital transmission with specified characteristics between two points. [T1.206-1988]
digital loop carrier (DLC)The equipment, including lines, that is used for digital multiplexing of telephone circuits, and that is provided by the network as part of the subscriber…
digital loopbackA mechanism incorporated into a terminal or into equipment in the network whereby a duplex communication path may be connected back upon itself so that…
digital mammography(DIH-jih-tul ma-MAH-gruh-fee) A technique that uses a computer, rather than x-ray film, to record x-ray images of the breast.
digital map libraryA series of directories and subdirectories designed to uniformly organize a collection of spatial data.
digital milliwattIn digital telephony, a test signal consisting of eight 8-bit words corresponding to one cycle of a sinusoidal signal approximately 1 kHz in frequency and…
digital modulationThe process of varying one or more parameters of a carrier wave as a function of two or more finite and discrete states of a signal. 2.
digital multiplex hierarchyA hierarchy consisting of an ordered repetition of tandem digital multiplexers that produce signals of successively higher data rates at each level of the…
digital multiplexerA device for combining several digital signals into an aggregate bit stream. Note: Digital multiplexing may be implemented by interleaving bits, in…
digital pathThe whole of the means of transmitting and receiving a digital signal of specified rate between the two digital distribution frames (or equivalent) at…
digital phase modulationModulation in which the instantaneous phase of the modulated wave is shifted between a set of predetermined discrete values in accordance with the…
digital phase-locked loopA phase-locked loop in which the reference signal, the controlled signal, or the controlling signal, or any combination of these, is in digital form.
digital photography(DIH-jih-tul fuh-TAH-gruh-fee) A type of photography in which images can be viewed on a computer screen.
digital primary patch bayA patch bay that provides (a) the first access of most local user digital circuits in a technical control facility and (b) patching, monitoring, and…
Digital ProcessingThe most familiar type of computing, in which problems are solved through the mathematical manipulation of streams of bits.
Digital recordingA recording in which binary numbers are written to the tape that represent quantized versions of the voltage signals from the recording microphone or the…
digital rectal examination(DIH-jih-tul REK-tul eg-zam-ih-NAY-shun) An examination in which a doctor inserts a lubricated, gloved finger into the rectum to feel for abnormalities.
digital reference signal (DRS)A digital representation of a 0-dBmO 1004-Hz analog sinusoid, such that it will be decoded into an analog signal equal in level to the analog signal…
digital selective calling (DSC)A synchronous system developed by the International Radio Consultative Committee (CCIR), used to establish contact with a station or group of stations…
digital service unit (DSU)A replacement for the modem in synchronous connections to the Internet, and which formats data for transmission.
digital signal (DS)A signal in which discrete steps are used to represent information. Note 1: In a digital signal, the discrete steps may be further characterized by signal…
digital signal 0 (DS0)In T-carrier, a basic digital signaling rate of 64 kb/s, corresponding to the capacity of one voice-frequency-equivalent channel.
digital signal 1 (DS1)A digital signaling rate of 1.544 Mb/s, corresponding to the North American and Japanese T1 designator.
digital signal 1C (DS1C)A digital signaling rate of 3.152 Mb/s, corresponding to the North American T1C designator.
digital signal 2 (DS2)A digital signaling rate of 6.312 Mb/s, corresponding to the North American and Japanese T2 designator.
digital signal 3 (DS3)1. A digital signal rate of 44.736 Mb/s, corresponding to the North American T3 designator. 2. A digital signaling rate of 32.
digital signal 4 (DS4)1. A digital signal rate of 274.176 Mb/s, corresponding to the North American T4 designator. 2. A digital signaling rate of 97.
digital signatureThe electronic equivalent of a handwritten signature, a digital signature is a unique block of text that verifies a user's identity and is appended to a…
Digital Signature Standard (DSS)A 1994-approved specification (FIPS-186-1) ruling the use of a single technique for generating signatures using the Digital Signature Algorithm.
digital slipIn the reception of a digital data stream, the loss of a bit, or the insertion by the receiver of a bit that was not transmitted, because of a difference…
digital speech interpolation (DSI)In digital speech transmission, the use of periods of inactivity or constant signal level to increase the transmission efficiency by insertion of…
digital subscriber line (DSL)In Integrated Services Digital Networks (ISDN), equipment that provides full-duplex service on a single twisted metallic pair at a rate sufficient to…
digital switchA switch that performs time-division-multiplexed switching of digitized signals.
digital switchingSwitching in which digitized signals are switched without converting them to or from analog signals.
digital synchronizationSynchronization based on the start of a transmitted digital data unit, such as a bit, character, block, or frame.
Digital Television (DTV)Any technology, using any of several digital encoding schemes, used in connection with the transmission and reception of television signals.
digital test access unit (DTAU)A generic term for the functions associated with accessing one or more channels within a digital signal for the purpose of testing.
digital transmission groupA group of digitized voice or data channels or both with bit streams that are combined into a single digital bit stream for transmission over…
digital transmission systemA transmission system in which (a) all circuits carry digital signals and (b) the signals are combined into one or more serial bit streams that include…
digital videoA video (television) signal represented by computer-readable binary numbers that describe luminance levels as well as a finite set of colors.
digital voice transmissionTransmission of analog voice signals that have been converted into digital signals.
digital watermarkAn identification code or bit pattern integrated into multimedia data that aids copyright owners in identifying illegally distributed audio, video, or…
Digital-to-analogThe process in which a series of discrete binary integers is converted to a continuous analog signal.
digital-to-analog (D-A) converterA device that converts a digital input signal to an analog output signal carrying equivalent information.
digitalis(DIH-jih-TA-lis) A substance used to make drugs that are used to treat several heart conditions, including congestive heart failure.
digitizeThe process of converting an analog value into a digital (numeric) representation.
digitized recordsrecords that have been converted to a digital image see imaging.
digitizerDevice that converts analog information into a digital format; for flat graphic material, such as maps, a digitizer can either be flatbed or scanning.
digitizer tabletA graphics drawing tablet used with a puck or stylus.
digoxin(dih-JOK-sin) A drug used to treat irregular heartbeat and some types of heart failure. It is also being studied in the treatment of some types of cancer.
digroupAbbreviation for digital group. In telephony, a basic digital multiplexing group.
dihaploidAn individual which arises from a doubled haploid.
dihematoporphyrin ether(dy-HEE-muh-toh-POR-fih-rin EE-ther) Used in photodynamic therapy, a drug that is absorbed by tumor cells; when exposed to light, it becomes active and…
dihybridAn individual that is heterozygous for two pairs of alleles; the progeny of a cross between homozygous parents differing at two loci.
dihydrotestosterone(dy-HY-droh-tes-TOS-teh-RONE) A hormone made from testosterone in the prostate gland, testes, and some other tissues.
diindolylmethane(dy-IN-doh-lil-MEH-thayn) A substance being studied in the treatment of prostate cancer and in the prevention of cervical cancer.
DIIOP (Domino Internet Inter-ORB Protocol)A server task that runs on the server and works with the Domino Object Request Broker to allow communication between Java® applets created with the Notes…
DikeA low embankment, usually constructed to close up low areas of the reservoir rim and thus limit the extent of the reservoir.
DilatancyThe expansion of cohesionless soils when subject to shear deformation.
dilatation and curettage(DIH-luh-TA-shun and KYUR-eh-TAHJ) A procedure to remove tissue from the cervical canal or the inner lining of the uterus.
dilate(DYE-late) To widen or enlarge an opening or hollow structure beyond its usual size, such as the pupil of the eye or a blood vessel.
dilation and curettage(DY-LAY-shun and KYUR-eh-TAHJ) A procedure to remove tissue from the cervical canal or the inner lining of the uterus.
dilator(DYE-lay-tor) A device used to stretch or enlarge an opening.
DiligenceThe activity required of an inventor and his attorney that must have started just prior to the entry into the field of another "inventor" and continue…
dillysA type of small earthworm popular for catching sunfish and trout.
dilute(dy-LOOT) To make something thinner, weaker, less concentrated, or less pure by adding something to it.
Diluted earnings per shareIn addition to reporting earnings per share, corporations must report diluted earnings per share.
DilutionDilution occurs when a company issues additional shares of stock, and as a result the earnings per share and the book value per share decline.
DIMA substance being studied in the treatment of prostate cancer and in the prevention of cervical cancer.
dimensionA name/value pair (for example, InstanceType=m1.small, or EngineName=mysql), that contains additional information to identify a metric.
dimer1. A molecule formed by the covalent combination of two monomers, generally accompanied by elimination of water. 2.
Dimericine(dy-MAYR-ih-seen) A lotion being studied in the treatment of skin cancer and a skin condition called xeroderma pigmentosum.
dimesnaA drug that belongs to the family of drugs called chemoprotective agents.
dimethyl sulfoxideA colorless liquid that readily dissolves many chemicals and penetrates animal and plant tissues.
dimethyl sulphoxide(Abbreviation: DMSO). A highly hygroscopic liquid and powerful solvent with little odour, colour or toxicity when pure.
dimethylxanthenone acetic acid(DY-MEH-thil-ZAN-theh-none uh-SEE-tik A-sid) An anticancer drug that is a type of angiogenesis inhibitor.
DimmerA light control device that allows light levels to be manually adjusted. A dimmer can save energy by reducing the amount of power delivered to the light…
dimorphismThe existence of two distinctly different types of individuals within a species. An obvious example is sexual dimorphism in mammals.
DINAbbreviation for Deutsches Institut für Normung.
dinkA small bass, usually under 6 to 8 inches long (also called a subcatchable).