ExpertGlossary terms starting with R

2,379 terms

  1. reversion Restitution of a mutant gene to the wild-type condition, or at least to a form that gives the wild-type phenotype; more generally, the appearance of a…
  2. revertive pulsing In telephone networks, a means of controlling distant switching selections by pulsing.
  3. Revetment An embankment or wall of sandbags, earth, etc., constructed to restrain material from being transported away. A facing of stone, cement, sandbags, etc.
  4. ReVia (reh-VEE-uh) A drug that blocks the action of opiates (drugs used to treat pain).
  5. REVIC Revised Enhanced Version of Intermediate COCOMO (Computer term).
  6. Review A review is the basis of FDA's decision to approve an application. It is a comprehensive analysis of clinical trial data and other information prepared by…
  7. Review Chain The assigned users selected within FDM to review and eSign a filer's financial disclosure report before it is completed. See definition of "Complete".
  8. Review Classification The NDA and BLA classification system provides a way of describing drug applications upon initial receipt and throughout the review process and…
  9. Review Date Review Date is the date on which a reviewer has completed a review of the report.
  10. review determination A decision reached in an access review as to whether material will be fully released, partially released, redacted, withdrawn, or withheld.
  11. Review of Operation and Maintenance (RO&M) A periodic evaluation of operation and maintenance activities at a particular facility.
  12. Reviewer For FDM purposes, a person who checks a filer's financial disclosure report for accuracy and completeness and to identify those financial interests that…
  13. Reviewing Official The designated agency ethics official or his delegate, the Secretary concerned, the head of the agency, or the Director of the Office of Government…
  14. Revisit Interval The time that elapses between successive observations of an object from a single sensor.
  15. Revival of Abandoned Application To reinstate a patent application that has been abandoned (relinquished), either by express abandonment or by inaction.
  16. Revlimid (REV-lih-mid) A drug that is similar to thalidomide, and is used to treat multiple myeloma and certain types of anemia.
  17. RevM10 gene An antiviral gene that is being studied in the treatment of cancer in patients who have HIV, the virus that causes AIDS.
  18. Revocable trust A revocable trust is a living trust that can be modified or revoked by the grantor, or person who establishes the trust and transfers property to it.
  19. Revocation Withdrawing the protections associated with a patent grant.
  20. Revocation of a Visa Cancellation of a visa. The visa is no longer good (valid) for travel to the United States.
  21. Revocation of probation or supervised release A probationer who violates one or more conditions of probation runs the risk that the sentence of probation may be revoked.
  22. Revoke To cancel or nullify something.
  23. Revoke a Certificate To prematurely end the operational period of a certificate effective at a specific date and time.
  24. Revolving Credit A credit agreement (typically a credit card) that allows a customer to borrow against a preapproved credit line when purchasing goods and services.
  25. Revolving Debt Credit that is extended by a creditor under a plan in which (1) the creditor contemplates repeated transactions; (2) the creditor may impose a finance…
  26. Rewind Act of putting new copper insulated wire in the armature windings of a generator. Replacement of an armature (stator) winding of a synchronous generator.
  27. Rewrite as in "URL rewriting"
  28. Rewriteable Technology Storage devices where the data may be written more than once typically hard drives, floppies and optical discs.
  29. Rex Block A blocking pattern where there is an upper level high located directly north of a closed low.
  30. REX/TTG Receiver Exciter/Test Target Generator.
  31. Reye syndrome (RAY SIN-drome) A rare disease that damages the brain and liver and causes death if not treated.
  32. Rez Resurrect
  33. RF Abbreviation for replicative form.
  34. rf bandwidth See occupied bandwidth, necessary bandwidth.
  35. rf power margin The amount of transmitter power above that which is computed by the link designer as the minimum required to meet specified link performance.
  36. rf tight Offering a high degree of electromagnetic shielding effectiveness.
  37. rF-TRICOM A cancer vaccine made with a form of a chicken virus that does not cause disease in humans. It is being studied in the treatment of some types of cancer.
  38. RFB Complimentary Room, Food, and Beverage.
  39. RFC River Forecast Center. Centers that serve groups of Weather Service Forecast offices and Weather Forecast offices, in providing hydrologic guidance and is…
  40. RFC (Request for Comments) An official document of the Internet Engineering Task Force (IETF) that specifies the details for protocols included in the TCP/IP family. [Exchange 2007]
  41. RFC822 Standard that specifies a syntax for text messages that are sent among computer users, within the framework of email.
  42. RFD Razorfen Downs
  43. RFE Request For Enhancement. Request for change or enhancement to an existing system or application.
  44. RFFEL Radio Frequency Linac .
  45. RFI (1) Request for Issue. (2) Request for Information. (3) Radio Frequency Interference.
  46. RFID See radio frequency identification (RFID).
  47. RFID (radio frequency identification) Technology that uses radio frequencies to identify, track, locate, and manage items See also bar code.
  48. RFL Radio Frequency Linac .
  49. RFLINAC Radio Frequency Linear Accelerator.
  50. RFLP See Restriction\-fragment\-length polymorphism.
  51. RFOG Resonant Fiber Optic Gyro.
  52. RFP Request for Proposal.
  53. RFQ Radio Frequency Quadrupole (Accelerator).
  54. RFT5-dgA immunotoxin (... IH-myoo-noh-TOK-sin) A monoclonal antibody linked to a toxic substance. It is being studied in the treatment of melanoma that has spread to distant…
  55. RG (1) Rail Gun. (2) Review Group.
  56. RGB Red, Green, Blue (Video Engineering term).
  57. RGB (Red, Green and Blue) The three primary colors in the additive color family which create all the computer color video signals for a computers color terminal.
  58. RGB Color Model A color model based upon representing a color as three components: red, green and blue. See HSB Color Model.
  59. RGC (Routing Group Connector) A connector in Exchange 2000 that connects routing groups to one another. An RGC is uni-directional and can have separate configuration properties (such…
  60. RGD Ragged
  61. RGN Region
  62. RH Abbreviation for recombinant human.
  63. RH Electronics Radiation Hardened Electronics.
  64. rhabdoid tumor A malignant tumor of either the central nervous system (CNS) or the kidney. Malignant rhabdoid tumors of the CNS often have an abnormality of chromosome…
  65. rhabdomyosarcoma (RAB-doh-MY-oh-sar-KOH-muh) Cancer that forms in the soft tissues in a type of muscle called striated muscle.
  66. RHCDS Rural Housing and Community Service
  67. RHD Radiation Hardened Electronics. 249
  68. RHETT II (1) Russian Half Effect Thruster Technology Program. (2) Russian Hall Electric Thruster Test.
  69. rheumatism A group of disorders marked by inflammation or pain in the connective tissue structures of the body. These structures include bone, cartilage, and fat.
  70. Rheumatoid arthritis (ROO-muh-TOYD ar-THRY-tis) An autoimmune disease that causes pain, swelling, and stiffness in the joints, and may cause severe joint damage, loss of…
  71. Rheumatrex (ROO-muh-trex) A drug used to treat some types of cancer, severe skin conditions such as psoriasis, and rheumatoid arthritis.
  72. RHI Range-Height Indicator
  73. rhIL-11 A drug used to increase the number of blood cells, especially platelets, in some cancer patients receiving chemotherapy.
  74. rhinoscope (RY-noh-skope) A thin, tube-like instrument used to examine the inside of the nose.
  75. rhinoscopy (ry-NOS-koh-pee) Examination of the inside of the nose using a rhinoscope. A rhinoscope is a thin, tube-like instrument with a light and a lens for…
  76. rhizobacterium A micro-organism whose natural habitat is near, on, or in, plant roots.
  77. Rhizobia Bacteria in a symbiotic relationship with leguminous plants that results in nitrogen fixation. See Nitrogen fixation.
  78. Rhizobium (pl.: Rhizobia) Prokaryotic species which are able to establish a symbiotic relationship with leguminous plants, as a result of which elemental nitrogen…
  79. Rhizosphere The soils region on and around plant roots.
  80. rhizoxin A substance that is being studied in the treatment of cancer. It comes from a fungus and is similar to vinca alkaloid drugs.
  81. rhombic antenna A directional antenna that is composed of long-wire radiators that form the sides of a rhombus, the two halves of which are fed equally in opposite phase…
  82. RHS A cluster software component that provides a communication, monitoring, and processing layer between the Cluster service and one or more clustered…
  83. rhubarb (ROO-barb) The root of this plant has been used in some cultures to treat certain medical problems. It may have anti-inflammatory and anticancer effects.
  84. Rhyolite Volcanic rock (or lava), characteristically light in color and containing 69% silica or more and generally rich in potassium and sodium (felsic…
  85. Rhyolitic domes See also Dome, volcanic; Rhyolite
  86. RI Abbreviation for routing indicator.
  87. Ri plasmid A class of large conjugative plasmid s found in the soil bacterium Agrobacterium rhizogenes , which can infect certain plants and cause hairy root disease.
  88. RIA Abbreviation for radioimmunoassay.
  89. ribavirin A drug used to treat respiratory syncytial virus (RSV) infection in the lungs.
  90. Ribbon (Photovoltaic) Cells A type of solar photovoltaic device made in a continuous process of pulling material from a molten bath of photovoltaic material, such as silicon, to form…
  91. ribbon cable Any cable constructed as a ribbon with parallel elements. 2. A fiber optic cable in which the optical fibers are held in grooves and laminated within a…
  92. Ribbon Lightning Appears to be a broad stream of fire. A succession of strokes, each blown a bit to the side of the previous strokes by wind, but striking so fast that all…
  93. RIBIT Reverse Illuminated Blocked Impurity Transducer.
  94. ribonuclease (Abbreviation: RNA se). Any enzyme that catalyses the hydrolysis of RNA.
  95. ribonucleic acid (RY-boh-noo-KLAY-ik A-sid) One of the two types of nucleic acids found in all cells.
  96. Ribonucleic acid (RNA) A chemical similar to a single strand of DNA. In RNA, the letter U, which stands for uracil, is substituted for T in the genetic code.
  97. ribonucleoside See: nucleoside.
  98. Ribonucleotide See: nucleotide.
  99. ribonucleotide reductase inhibitor A family of anticancer drugs that interfere with the growth of tumor cells by blocking the formation of deoxyribonucleotides (building blocks of DNA).
  100. Ribose A monosaccharide found in all ribonucleosides, ribonucleotides and RNA. Its close analogue, 2-deoxyribose, is similarly found in all deoxyribonucleosides…