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 are caused by a complex interaction that involves fluctuating estrogen levels; the hypothalamus (a region of the brain that regulates body temperature); norepinephrine, a key brain chemical, and specialized receptors in the brain; and the body's blood vessels and sweat glands.n addition to hot flashes, many menopausal women experience the symptom's nocturnal accomplice known as night sweats. You wake up in the middle of the night cold and clammy, your heart pounding, and the sheets drenched in sweat.