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.
What Is a Hot Flash? A hot flash is a quick feeling of heat and sometimes a red, flushed face and sweating. The exact cause of hot flashes is not known, but they may be related to changes in circulation. Hot flashes happen when the blood vessels near the skin's surface dilate to cool, making you break out in a sweat. Some women have a rapid heart rate or chills. Hot flashes with sweating can also happen at night. These are called night sweats and may make it harder to sleep. A hot flush is a hot flash plus redness in the face and neck. How Long Will I Have Hot Flashes? That depends. Some women have hot flashes for a very short time during menopause. Other women may have hot flashes for the rest of their lives.