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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «O»:

  1. Orthopedics Orthopedics
    Orthopedics: The branch of surgery broadly concerned with the skeletal system (bones). Orthopedics is how this field of surgery is listed under Physicians & Surgeons in the telephone Yellow Pages in Jacksonville, Florida. This spelling is quite common today. But it is incorrect, erroneous, flat ...
  2. Orthopedist Orthopedist
    Orthopedist: An orthopaedic surgeon, orthopaedics being the branch of surgery broadly concerned with the skeletal system (bones). Orthopedics is how this field of surgery is listed under Physicians & Surgeons in the telephone Yellow Pages in Jacksonville, Florida. This spelling is quite common ...
  3. Orthopnea Orthopnea
    Orthopnea: The inability to breathe easily unless one is sitting up straight or standing erect....
  4. Orthopod Orthopod
    Orthopod: Slang for orthopedist. ...
  5. Orthopox Orthopox
    Orthopox: The family of viruses to which belongs vaccinia, the virus that causes smallpox. Other members of the orthopox family of viruses capable of infecting humans include: Cowpox -- Usually contracted by milking infected cows. Causes ulcerative lesions (sometimes called "milkers nodules") on th...
  6. Orthorexia nervosa Orthorexia nervosa
    Orthorexia nervosa: A term designating a disorder in which there is an unhealthy obsession with healthy eating, an extreme dedication to extreme diets that can starve the body of basic nutrition. The emphasis (or overemphasis) is on the quality, not the quantity, of food in the diet. Orthorexia nerv...
  7. Orthoscopic Orthoscopic
    Orthoscopic: Having correct vision or producing it. Orthoscopic, in other words, is free from optical distortion or designed to correct distorted vision. This fits with the prefix "ortho", meaning straight or erect, and with "scopic" from the Greek "skopein", to see. Orthoscopic literally is to...
  8. Orthosis, thoracolumbosacral (TLSO) Orthosis, thoracolumbosacral (TLSO)
    Orthosis, thoracolumbosacral (TLSO): One of the two main types of braces used to correct the lateral (sideways) curve of the spine in scoliosis. Patients can wear this brace to correct spinal curves whose apex is at or below the eighth thoracic vertebra. The TLSO is an underarm brace, which means th...
  9. Orthostatic hypotension Orthostatic hypotension
    Orthostatic hypotension: A temporary lowering of blood pressure (hypotension) due usually to suddenly standing up (orthostatic). Orthostatic hypotension may be experienced by healthy people -- it is more common in older people -- who rise quickly from a chair, especially after a meal, and have a...
  10. Orthotic Orthotic
    Orthotic: A support, brace, or splint used to support, align, prevent, or correct the function of movable parts of the body. Shoe inserts are orthotics that are intended to correct an abnormal, or irregular walking pattern, by altering slightly the angles at which the foot strikes a walking or ru...
  11. Oryzomys palustris Oryzomys palustris
    Oryzomys palustris: See: Rice rat....
  12. Os Os
    Os: Two Latin words used in medicine that have different meanings and pronunciations. 1. The mouth: a. The upper opening of the digestive tract. b. Any opening or aperture in the body. The o in os meaning mouth or opening is pronounced as in hope. The genitive form of os is oris from which comes...
  13. OS (lens prescription) OS (lens prescription)
    OS (lens prescription): Abbreviation of "oculus sinister." Latin for "left eye." By contrast, OD stands for "oculus dexter" which is Latin for the right eye....
  14. Os calcis Os calcis
    Os calcis: See: Calcaneus....
  15. Os sacrum Os sacrum
    Os sacrum: The large, heavy bone at the base of the spine, which is made up of fused sacral vertebrae. The sacrum is located in the vertebral column, between the lumbar vertebrae and the coccyx. It is roughly triangular in shape, and makes up the back wall of the pelvis. The female sacrum is wid...