Look up downgrade in Wiktionary, the free dictionary. In computing, downgrading refers to reverting software (or hardware) back to an older version; downgrade is the opposite of upgrade. Often, complex programs may need to be downgraded to remove unused or bugged features, and to increase speed and/or ease of use. The same can occur with machinery.
Mastodynia is a medical term that means a patient suffers from pain in the breast. Sometimes the pain is associated with the menstrual cycle, but for some people, mastodynia is a symptom of an underlying disease. Occasionally, a patient may have breast pain that has no identifiable cause, although such simple causes as an ill-fitting bra may be found to be the problem.
A mastoidectomy is a surgical procedure that removes diseased mastoid air cells. These cells sit behind your ear in a hollow space in your skull. A mastoidectomy is a surgical procedure that removes diseased mastoid air cells. The mastoid is the part of your skull located behind your ear. Itâs filled with air cells made of bone and looks like a honey comb. The diseased cells are often the result of an ear infection that has spread into your skull.