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Glossary of Pathology Terms
beginning with letter O
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obese Tweet Definition of obese Like Definition of obese on Facebook
adjective (comparative: more obese, superlative: most obese)
  1. Extremely overweight, especially: weighing more than 20% (for men) or 25% (for women) over their ideal weight determined by height and build; or, having a body mass index) over <math>30\mathrm{kg}/\mathrm{m}^2</math>.
occlusion Tweet Definition of occlusion Like Definition of occlusion on Facebook
  1. The process of occluding, or something that occludes.
  1. (medicine) Anything that obstructs or closes a vessel or canal.
  2. (context, medicine, dentistry) The alignment of the teeth when upper and lower jaws are brought together.
  3. (meteorology) An occluded front.
  4. (linguistics) A closure within the vocal tract that produces an oral stop or nasal stop.
  5. (physics) The absorption of a gas or liquid by a substance such as a metal.
  6. (computing) The blocking of the view of part of an image by another.
octan Tweet Definition of octan Like Definition of octan on Facebook
  1. occuring every eight days.
oligomenorrhea Tweet Definition of oligomenorrhea Like Definition of oligomenorrhea on Facebook
  1. infrequent or light menstrual periods in women of child-bearing age
opportunistic Tweet Definition of opportunistic Like Definition of opportunistic on Facebook
  1. take advantage of, taking advantage of situations that arise
  • The danger now isn't so much from the AIDS virus itself as from infections.
    1. said of people who will take advantage of situations to advance their own interests, without regard for principles
  • You can't trust somebody that -- she'll stab you in the back the first chance she gets.
    osteoarthritis Tweet Definition of osteoarthritis Like Definition of osteoarthritis on Facebook
    noun (plural osteoarthritides)
    1. (pathology) A form of arthritis, affecting mainly older people, caused by chronic degeneration of the cartilage and synovial membrane of the joints, leading to pain and stiffness.
    osteoporosis Tweet Definition of osteoporosis Like Definition of osteoporosis on Facebook
    noun (osteoporoses)
    1. (pathology) A disease, occurring especially in women following menopause, in which the bones become extremely porous and are subject to fracture.
    otalgia Tweet Definition of otalgia Like Definition of otalgia on Facebook
    1. (pathology) earache
    otitis Tweet Definition of otitis Like Definition of otitis on Facebook
    noun (plural: otitides)
    1. (pathology) Inflammation of the ear.
    ovaritis Tweet Definition of ovaritis Like Definition of ovaritis on Facebook
    1. (Medicine)Condition of inflammation of the ovary.
    overweight Tweet Definition of overweight Like Definition of overweight on Facebook
    1. An excess of weight.
    1. (context, of a person) heavier than what is generally considered healthy for a given body type and height.
    2. ({context, transportation industry, of a vehicle) weighing more than what is allowed for safety or legal commerce
      • 1988, U.S. Congress, Office of Technology Assessment, Gearing Up for Safety: Motor Carrier Safety in a Competitive Environment, ISBN 1428922504, page 38,
      • : All States allow oversized vehicles if a special permit is obtained, although most States will grant permits only for non-divisible loads.
      • 1993, Legacy in the Sand: Chemical Command in Operations Desert Shield & Desert Storm, ISBN 0788104756, page 74,
      • : He got as far as the first weigh station, where troopers found his truck to be and threatened to pull him off the road.
      • 1998, Collision of Northern Indiana Commuter Transportation District Train 102, ISBN 1428996532, page 48,
      • : Postaccident examination of the vehicle indicated, for example, that the driver had not adequately maintained his logbook and that his vehicle had been for travel in Indiana.

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