Meta- was first used in that way in metaphysics and has been extended to a number of other disciplines, giving us such words as metapsychology and metamathematics.. Metadata takes the transcending aspect a step further, applying it to the concept of pure information instead of a discipline. Metadata is a fairly new word (it appeared in the latter half of the 20th century), whereas data can be traced back to the middle of the 17th century. First Known Use of metadata 1983
A hot flash is a brief feeling of intense warmth and sweating. Hot flashes commonly occur in women around the time of menopause. Researchers do not know exactly what causes hot flashes. Current theories suggest hot flashes are due to a menopause-related drop in the body's level of female hormones called estrogens. This drop affects the hypothalamus, an area of the brain that regulates body temperature.
Hot flashes and night sweats may be side effects of cancer or its treatment. Sweating is the body's way of lowering body temperature by causing heat loss through the skin. In patients with cancer, sweating may be caused by fever, a tumor, or cancer treatment. Hot flashes can also cause too much sweating. They may occur in natural menopause or in patients who have been treated for breast cancer or prostate cancer. Hot flashes combined with sweats that happen while sleeping are often called night sweats or hot flushes.