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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «O»:

  1. Otitis media, acute Otitis media, acute
    Otitis media, acute: See: Acute otitis media....
  2. Oto- Oto-
    Oto-: Prefix meaning ear, as in otolaryngologist and otoscope. Oto- becomes ot- before a vowel, as in otalgia and otitis. From the Greek "otos" pertaining to the ear....
  3. Otoacoustic emission test Otoacoustic emission test
    Otoacoustic emission test (OAE): An otoacoustic emission test (OAE) measures an acoustic response that is produced by the inner ear (cochlea), which in essence bounces back out of the ear in response to a sound stimulus. The test is performed by placing a small probe that contains a microphone a...
  4. Otolaryngologist Otolaryngologist
    Otolaryngologist: A physician specialized in diagnosing and treating diseases of the head and neck, especially those involving the ears, nose, and throat (ENT). Also called an ENT, ENT doctor, or ENT physician....
  5. Otolaryngology Otolaryngology
    Otolaryngology: A medical and surgical specialty concerned with the diagnosis, management, and treatment of diseases and disorders of the ear, nose, throat (ENT) and related structures of the head and neck, including the sinuses, larynx (voice box), oral cavity, and upper pharynx (mouth and throat)....
  6. Otology Otology
    Otology: The study and medical care of the ear....
  7. Otopharyngeal tube Otopharyngeal tube
    Otopharyngeal tube: The tube that runs from the middle ear to the pharynx, known also as the Eustachian tube. The function of this tube is to protect, aerate and drain the middle ear (and mastoid). Occlusion of the Eustachian tube leads to the development of middle ear inflammation (otitis media)....
  8. Otoplasty Otoplasty
    Otoplasty: Plastic surgery to reshape the outer ear....
  9. Otosclerosis Otosclerosis
    Otosclerosis: The abnormal formation of new bone in the middle ear that gradually immobilizes the stapes (stirrup bone) and prevents it from vibrating in response to sound, causing progressive loss of hearing. Otosclerosis usually affects both ears. It is a common disorder, especially among young w...
  10. Otoscope Otoscope
    Otoscope: Instrument for looking in the ear. Today, otoscopic or ophthalmoscopic heads can usually be attached to the base (which supplies the electrical power) to look at the ears or eyes. ...
  11. Ounce Ounce
    Ounce: A measure of weight equal to 1/16th of a pound or, metrically, 28.35 grams. The abbreviation for ounce is oz. (An ounce of prevention is reputedly worth a pound of cure.)...
  12. Outer ear Outer ear
    Outer ear: There are three sections of the ear: the outer ear, the middle ear, and the inner ear. The outer ear looks complicated but it is functionally the simplest part of the ear. It consists of the pinna or auricle (the visible projecting portion of the ear), the external acoustic meatus...
  13. Outlet Outlet
    Outlet: The exit or opening. The means by which something escapes....
  14. Outlet, gastric Outlet, gastric
    Outlet, gastric: See: Gastric outlet....
  15. Outpatient Outpatient
    Outpatient: A patient who is not an inpatient (not hospitalized) but instead is cared for elsewhere -- as in a doctor's office, clinic, or day surgery center. The term outpatient dates back at least to 1715. Outpatient care today is also called ambulatory care....