Origin and Etymology of is. Middle English, from Old English; akin to Old High German ist is (from sÄ«n to be), Latin est (from esse to be), Greek esti (from einai to be)
For the medical journal, see Menopause (journal). Menopause, also known as the climacteric, is the time in most women's lives when menstrual periods stop permanently, and they are no longer able to bear children. Menopause typically occurs between 49 and 52 years of age.
Boys enter the life stage called puberty on an average between ages 11 and 13, but doing so earlier and later than those ages is 100% normal. During puberty, a boy will grow armpit hair, groin hair, notice a lowering of his voice, and will notice changes (good ones) in the activity of his penis. Was this answer useful?