ExpertGlossary terms starting with O

1,317 terms

  1. osmolality The concentration of particles dissolved in a fluid. The osmolality of serum can help diagnose several medical conditions such as dehydration, diabetes…
  2. osmosis Diffusion of water across a semi-permeable membrane from zones of low solute concentration to zones of higher solute concentration.
  3. osmotic (oz-MAH-tik) Having to do with osmosis (the passage of a liquid through a membrane from a less concentrated solution to a more concentrated one).
  4. osmotic potential Change in the energy state of solvent brought about by dissolving a substance in the solvent - water in the biological sciences.
  5. osmoticum A chemical agent (e.g. polyethylene glycol, mannitol, glucose or sucrose) employed to maintain the osmotic potential of a nutrient medium equivalent to…
  6. OSS Operations Support System (Navy C3 program).
  7. OST A Microsoft Outlook information store that is used to save folder information that can be accessed offline.
  8. OST file format File format used by the Microsoft Outlook as an offline folder file to make it possible for the user to work offline and then to synchronize changes with…
  9. osteitis deformans (OS-tee-I-tis dih-FOR-manz) A chronic condition in which both the breakdown and regrowth of bone are increased.
  10. Osteocalcin (OC) A cytokine produced by osteoblasts that promotes bone formation.
  11. Osteoclast A giant multi-nuclear cell formed in the bone marrow of growing bones.
  12. Osteocyte A cell from the bone tissue.
  13. Osteogenesis imperfecta A large and miscellaneous group of conditions of abnormal fragility and plasticity of bone, with recurring fractures on trivial trauma.
  14. osteogenic sarcoma (OS-tee-oh-JEH-nik sar-KOH-muh) A cancer of the bone that usually affects the large bones of the arm or leg.
  15. osteolytic (OS-tee-oh-LIH-tik) Causing the breakdown of bone.
  16. osteomyelitis (OS-tee-oh-MY-uh-LY-tis) Inflammation of the bone caused by an infection, which may spread to the bone marrow and tissues near the bone.
  17. osteopenia (OS-tee-oh-PEE-nee-uh) A lower-than-normal bone mass or bone mineral density (the amount of bone mineral contained in a certain amount of bone).
  18. Osteoporosis (OS-tee-oh-puh-ROH-sis) A condition that is marked by a decrease in bone mass and density, causing bones to become fragile.
  19. Osteoprogenitor A cell-type that differentiates into a mature osteocyte.
  20. osteosarcoma (OS-tee-oh-sar-KOH-muh) A cancer of the bone that usually affects the large bones of the arm or leg.
  21. ostomy (OS-toh-mee) An operation to create an opening (a stoma) from an area inside the body to the outside. Colostomy and urostomy are types of ostomies.
  22. OSTP Office of Science and Technology Policy.
  23. ostracod a small crustacean that lives in either the ocean or in freshwater.
  24. Ostracods Group of small crustaceans with a bivalved carapace which can be closed to completely cover the body; important planktonic fish food.
  25. OSWR Office of Science and Weapons Research.
  26. OT Operational Test.
  27. OT&E See Operational Test and Evaluation.
  28. OTA (1) Office of Technology Assessment, Washington, DC. (2) Operational Test Agency. (3) Office of Technology Applications, MDA.
  29. OTA (Over The Air) Over The Air (OTA) refers to any wireless networking technology.
  30. OTAR Abbreviation for over-the-air rekeying.
  31. OTC A medicine that can be bought without a prescription (doctor's order). Examples include analgesics (pain relievers) such as aspirin and acetaminophen.
  32. OTC Bulletin Board (OTCBB) During the trading day, the electronic OTC bulletin board (OTCBB) provides continuously updated real-time bid and ask prices, volume information, and…
  33. OTCIXS Officer in Tactical Command Information Exchange Subsystem (Navy term).
  34. OTDR Optical Time-Domain Reflectometer .
  35. OTF Object Track Profile.
  36. OTH Over the Horizon.
  37. OTH-B Over-The-Horizon.
  38. OTH-T Over-The-Horizon Targeting.
  39. other common carrier (OCC) A communications common carrier--usually an interexchange carrier--that offers communications services in competition with AT&T and/or the established U.S.
  40. Other current transfer payments to the rest of the world Payments consisting of U.S. government military and nonmilitary grants-in-cash and grants-in-kind to foreign governments.
  41. Other Residential Hotels and motels where the normal occupancy of a guest is 6 months or more; a tourist home or rooming house which has more than four roomers.
  42. OTLK Outlook
  43. OTO Operational Test Organization.
  44. otolaryngologist (OH-toh-LA-rin-GAH-loh-jist) A doctor who specializes in treating diseases of the ear, nose, and throat. Also called ENT doctor.
  45. otolith The ear bone of a fish. The age of a fish can be determined by counting the layers in the otolith, much like the rings of a tree.
  46. OTP Outline Test Plan.
  47. OTPP Office of Technical Plans and Policy
  48. OTR Other
  49. OTRW Otherwise
  50. OTS Off-the-Shelf.
  51. OTSA Off-the-Shelf Analysis.
  52. OTV Orbital Transfer Vehicle.
  53. OU See definition for: Organizational Unit (OU)
  54. OU (organizational unit) An Active Directory container object used within domains. An organizational unit is a logical container into which users, groups, computers, and other…
  55. ounce A measure of weight (one-sixteenth pound) and volume (one-eighth cup).
  56. OUSD Office of the Under Secretary of Defense. 216
  57. OUSD (A&T) Office of the Under Secretary of Defense (Acquisition & Technology).
  58. OUSD (A) OBSOLETE. See OUSD (A&T).
  59. Oustide bet Bets on 1 to 1 even money (red/black, odd/even, high/low) and 2 to 1 (dozen or column) payouts.
  60. Out A card that will make your hand win. Normally heard in the plural. Example: "Any spade will make my flush, so I have nine outs."
  61. out call A universal personal telecommunications (UPT) call type that permits a UPT user to make calls from any terminal on any network, and have access to his/her…
  62. Out of Band Laser Flux (Sensor) Laser energy directed at a sensor that is intended to damage or disrupt the sensor and is outside the sensors bandwidth.
  63. out of scope A variable is in scope as long as the program's flow of control is within the variable's defining block. Otherwise, it is out of scope.
  64. Out of Status A U.S. visa allows the bearer to apply for entry to the United States in a certain classification for a specific purpose, such as student (F), visitor…
  65. out-call registration A feature that enables the universal personal telecommunications (UPT) user to register for outgoing calls from the current terminal address to allow…
  66. out-of-area An area not included in the subscribed service. An area may be defined in terms of a state/province, NPA, LATA, etc. [T1.207-1998]
  67. out-of-band emission Emission on a frequency or frequencies immediately outside the necessary bandwidth which results from the modulation process, but excluding spurious…
  68. out-of-band notification In encryption, notification using a communication means other than the primary communication means. [After X9.49]
  69. out-of-band signaling Signaling that uses a portion of the channel bandwidth provided by the transmission medium, e.g.
  70. out-of-bounds value A redundant value used to indicate that a different action from the norm is required at some point.
  71. out-of-frame-alignment time The time during which frame alignment is effectively lost. Note: The out-of-frame-alignment time includes the time to detect loss of frame alignment and…
  72. Out-of-Network Co-Insurance The percent (for example, 40%) you pay of the allowed amount for covered health care services to providers who do not contract with your health insurance…
  73. Out-of-Network Co-Payment A fixed amount (for example, $30) you pay for covered health care services from providers who do not contract with your health insurance or plan.
  74. Out-of-Network Coinsurance The percentage (for example, 40%) you pay of the allowed amount for covered health care services to providers who don't contract with your health…
  75. Out-of-Network Copayment A fixed amount (for example, $30) you pay for covered health care services from providers who don't contract with your health insurance or plan.
  76. Out-of-network provider For health plans that utilize an HMO or PPO, a health care provider (such as a hospital or doctor) that is not contracted to be part of the HMO or PPO…
  77. Out-of-Pocket The amount of money you pay for medical services after insurance has paid its contribution.
  78. Out-of-Pocket Costs Your expenses for medical care that aren't reimbursed by insurance. Out-of-pocket costs include deductibles, coinsurance, and copayments for covered…
  79. Out-of-Pocket Estimate An estimate of the amount that you may have to pay on your own for health care or prescription drug costs.
  80. Out-of-Pocket Limit The most you pay during a policy period (usually a year) before your health insurance or plan begins to pay 100% of the allowed amount.
  81. Out-of-Pocket Maximum The most you will have to pay in a year for deductibles and coinsurance for covered benefits.
  82. Out-of-pocket maximum/limit The most you pay during a policy period (usually one year) before your health insurance or plan starts to pay 100% for covered essential health benefits.
  83. Out-of-the-money An option is out-of-the-money when the market price of an instrument on which you hold an option is not close to the strike price.
  84. out-slot signaling Signaling performed in digital time slots that are not within the channel time slot.
  85. Out-Years Normally, six years beyond the year being worked in the upcoming POM/budget.
  86. Outage A discontinuance of electric power supply.
  87. outage duration That period of time between the onset of an outage and the restoration of service.
  88. outage probability The probability that an outage will occur within a specified time period.
  89. outage ratio The sum of all the outage durations divided by the time period of measurement.
  90. outage state See outage.
  91. outage threshold For a supported performance parameter of a system, the value that establishes the minimum performance level at which the system is considered to remain in…
  92. Outbound Traffic moving from one waterway into another where the origin is on the subject waterway.
  93. outbound host The host computer that receives a newsfeed. [Exchange 5.5]
  94. Outbound Link A link from one website pointing at another external website. Some webmasters believe in link hoarding, but linking out to useful relevant related…
  95. Outbound links links that direct "off-site" to another website
  96. outbreeding A mating system characterized by the inter-breeding of genetically unrelated or dissimilar individuals.
  97. Outburst Flood See Jokulhlaup.
  98. outcard A device used to physically replace material that has been removed from a file that indicates what was taken, by whom, and when
  99. outcome A specific result or effect that can be measured. Examples of outcomes include decreased pain, reduced tumor size, and improvement of disease.
  100. outdialing A process in which Unified Messaging (UM) dials or transfers calls. Unified Messaging generally receives calls, but sometimes dials calls.