| Name |
Notes |
| Dyson Sphere [1] |
An artificial sphere built around a star in order to provide an extremely large living area and allow the stars radiated output to be collected and used. [1] |
| Dynospanner [2] |
A tool used by the Federation in the 2260s. In 2265 Cervantes Quinn falsely claimed that his cargo included dynospanners. [2] |
| Dynoscanner [3] |
A scanner used to detect molecular activity. [3] |
| Dynamite [4] |
Chemical explosive. [4] |
| Dynametric array [5] |
Analytical tool used by Federation engineers. [5] |
| Dutotronic probe [6] |
Tool used to regulate plasma flow. [6] |
| Duridium alloy [7] |
A metal used in the construction of high quality throwing darts. [7] |
| Duratanium polyalloy [8] |
A metal composite used in Federation Starship hulls. [8] |
| Duranium [9] |
Metal alloy used in the construction of Federation Starship hulls. [9] |
| Duotronics [10] |
A computer technology created by Dr. Richard Daystrom which formed the basis of all computers in the mid 23rd century. [10] |
| Duonetic field [11] |
A type of energy which inhibits the operation of many technological devices. [11] |
| Duck blind [12] |
An observation post which is hidden behind a holographic projection that mimics natural surroundings. The federation employs Duck Blinds to observe primitive cultures without their knowledge. [12] |
| Dualitic convertor [13] |
Tool used by Starfleet engineering specialists. [13] |
| Drones |
A semi-autonomous flight system which is able to perform a number of different tasks. One such system was designed by Adam Soong and used to project a Sunshield to protect his daughter from harmful solar rays. [14] In an alternate reality the Confederation of Earth used a larger version to raise a sunshield over the entire planet, offsetting the effects of global warming, without attempting to solve the root cause. [15]
Adam Soong attempted to use a militarized version to destroy the Europa mission launch vehicle, however, Rios and Raffi were able to use the drones to target each other, allowing the rocket to launch as scheduled. [16] |
| Drone [17] |
Small flying device which the Son'a used in order to implant the Ba'ku with isolinear tags in order to facilitate transport. [17] |
| Drive coil assembly [18] |
An element of a Federation impulse engine. [18] |
| Drake equation [19] |
Theoretical equation proposed on 20th century Earth which attempts to estimate the number of civilizations in the galaxy. [19] |
| Drag coefficient [20] |
A measurement of the frictional forces on a body travelling in a fluid relative to its speed. [20] |
| Doppler compensator [21] |
An element of the transporters which compensates for the relative velocities of the system and the object being transported. [21] |
| Dolamide [22] |
Chemical energy source used in power generators or, when very pure, in weapons. [22] |
| Docking port [23] |
An area on a vessels hull which allows it to physically link itself to any other object similarly equipped. [23] |
| Distortion field [24] |
A phenomena which occasionally exists in a planetary atmosphere. A distortion field prevents the use of transporters or shuttlecraft. [24] |
| Displacement wave [25] |
A spatial phenomenon which involves a polarized magnetic variation. [25] |
| Dispersion field [26] |
Field which prevents the use of a transporter within a given area. [26] |
| Directional sonic generator [5] |
Handheld device which emits sound in a narrow beam. [5] |
| Dimensional Shift [27] |
What is termed in the Federation as the Elway theorem has long been known as a potentially advanced transporter system. The Starfleet Academy astrophysics course has two hours on the theorem, which has amongst its spinoffs the adaptive transport also known as subspace transition rebounding transport or the dimensional shift. The theorem eventually proved to be inaccurate and all research was abandoned by the mid 23rd century. However, the dimensional shift idea did indeed work successfully and was adopted by the Ansata terrorist movement on the planet Rutia IV. Unfortunately for the terrorists, the process is inimical to living tissue; genetic damage results from each use of the technology with a cumulative effect which is invariably fatal. The Ansata kept using the system despite this, since the transport is untraceable by any standard method of detection.
When the Ansata kidnapped Dr. Beverly Crusher, the Enterprise-D crew became involved in the fight against them. Each person using the transport wears an armband containing a subspace field coil and an isolated power source. Use of the system results in a slight nuclear vibration which allowed the Enterprise crew to speculate that the dimensional shift was being used. They were subsequently able to locate the terrorist headquarters using an adaptive subspace echogram to trace the dimensional shifts. A joint Starfleet / Rutian force attacked the headquarters and rescued the Federation prisoners, killing the leader of the terrorists in the process. [27] |
| Dilithium vector calibrations [28] |
A routine maintanence performed on the dilithium crystals of a Federation Starship. High accelerations are not advisable immediately after this procedure is performed. [28] |
| Dilithium sequencers [29] |
Element of the warp drive of an NX class starship. [29] |
| Dilithium matrix [30] |
Element of the warp drive system of an NX class starship. During start up of the reactor the output had to be confined to within 300 and 312 millicochranes to prevent fusion of the dilithium matrix, unless the spatial-compression index was greater than 5.62% or the ship was within two parsecs of a Class-C gravimetric field distortion. [30] |
| Dilithium hydroxls [31] |
Substance which could disable the warp drive of an NX class starship if it was mixed with ionized pyrosulfates and sent into the plasma vents. [31] |
| Dilithium crystal [32] |
An element of Federation warp drives located within the warp core. Dilithium crystals control and regulate the matter/antimatter reaction which powers the vessel. Crystals should ideally be very pure, and very carefully aligned within the reaction chamber. [32] |
| Dilithium chamber [33] |
Element of a Federation warp drive which contains the dilithium crystals. [33] |
| Dikironium [34] |
A gaseous substance. Certain life forms are composed partially of Dikironium. [34] |
| Differential magnetometer [35] |
A scientific instrument used by the Federation. [35] |
| Dielectric field [36] |
A semi polarized magnetic field which can be used to overcome some forms of atmospheric turbulence. [36] |
| Dicyclic warp signature [37] |
Energy characteristic produced by Hirogen warp drive technology. [37] |
| Dicosilium [38] |
A substance used to create reflective coils in a Krieger wave convertor. [38] |
| Diburnium-osmium alloy [39] |
A metal used in the construction of artificial planets by the Kalandans. [39] |
| Diboridium core [40] |
A small power generator used by the Cardassians. [40] |
| Diamond [41] |
A form of carbon crystal, diamonds were relatively rare and were thus considered to be valuable in many cultures. Humans considered diamonds to be valuable up until 2367, with a large deposit constituting 'an incredible fortune' [41], though Lithium crystals were worth three hundred times more than diamonds of equal weight. [42] However, during 2367 the ability to manufacture large quantities of gem stones became widespread - so easy did this become, in fact, that a Constitution class vessel could manufacture diamonds by the ton. This rendered them worthless. [41] |
| Diamide [43] |
A metallic substance sometimes used in the construction of Bajoran earrings. [43] |
| Diamagnetic storm [44] |
Atmospheric storm which carried polaric energy. It was extremely dangerous to be caught in one. [44] |
| Diamagnetic minerals [45] |
Naturally occurring substance found in igneous rock which can interfere with communications systems. [45] |
| Diamagnetic dust [46] |
Substance to be found in the ring system of certain planets. [46] |
| Diagnostic [47] |
Starfleet term for a variety of procedures used to determine the nature of a fault in any system. [47] |
| Deuterium pumps [48] |
Element of the drive system of an NX class starship. [48] |
| Deuterium injector [49] |
Element of a Starship's warp drive system. [49] |
| Deuterium control conduit [50] |
A part of a Federation Starship's warp drive system. [50] |
| Deuterium [1] |
An isotope of the element hydrogen which is formed of one proton and one neutron orbited by a single electron. [1] |
| Deuridium [51] |
A substance capable of stabilising the cell structure of the Kobliad. Sources of deuridium were located in the Gamma Quadrant. [51] |
| Desealer rod [52] |
Device which unlocks pulsatel lock seal. [52] |
| Dentarium [53] |
A metal alloy which is used in the construction fo Vulcan spacecraft. [53] |
| Denevan crystals [54] |
Contraband material which cannot legally be sold or owned within the Federation. [54] |
| Delta wave frequency [55] |
An energy pattern generated by bothan ships. [55] |
| Delta series radioisotopes [56] |
A set of radioactive isotopes which are considered highly toxic to Humans. [56] |
| Delta radiation [9] |
Form of highly hazardous radiation capable of causing severe disfigurement. [9] Delta radiation could be used to stabilise liquid Trellium-D, though it was not wholly successful at this task. [57] In the Mirror universe the warp core of the NX class starship emitted Delta radiation, and disfigurement was one of the hazards of being a Chief Engineer. [58] |
| Dekyon [59] |
A class of particles which travel below light speed. [59] |
| Deflector shield [60] |
A force field projected around a space vessel or installation in order to protect it from attack. The effectiveness of shields varies greatly according to the type and frequency of weapon used. [60] |
| Decompression chamber [61] |
A sealed chamber used to gradually alter atmospheric pressure over hours or days. [61] |
| Data port [62] |
A socket implanted into a person to allow them to interface directly with a computer. [62] |
| Data crystal [62] |
An advanced information storage system used by the Idanians. [62] |
| Data clip [63] |
A handheld information storage system used by the Kellerun. [63] |
| Dark Matter [64] |
Matter which is undetectable to most forms of sensor and scanner. Striking dark matter can cause normal materials to briefly phase out of space. Dark matter is commonly found in certain types of nebula, [64] or in asteroid form. [65] |
| Dampening field [66] |
A field which inhibits most forms of energy. Dampening fields can prevent weapons or communicators from working. [66] |
| D'Arsay Archive [67] |
In 2370 the USS Enterprise discovered a rogue comet which had originated within the D'Arsay system some 87 million years earlier. Soon after the find, strange artefacts began to appear on the Starship bearing symbols of an alien language. The crew quickly realized that some kind of alien computer program had been loaded into the main computer from within the comet. Captain Picard ordered the outer layer of the comet melted away; inside there lay a huge metallic object covered with the same symbols that had appeared on the ship.
The transformations continued; Lieutenant Commander Data, the ship's android officer, underwent changes to his positronic brain which drastically altered his personality. Large sections of the Enterprise were recreated in the form of the alien culture.
Captain Picard surmised that the archive was recreating personalities from its culture within Data. Picard was able to uncover the relationship between some of the characters and use this to convince the dominant personality - Masaka - to release its control of his officer and the ship. With the archive dormant, the ship's chief engineer was able to disable it permanently. The Enterprise proceeded on its way while Starfleet despatched an archaeological team to study the archive. [67] |
