Freebase(0.00 / 0 votes)Rate this definition: Portable Network Graphics. Portable Network Graphics is a raster graphics file format that supports lossless data compression. PNG was created as an improved, non-patented replacement for Graphics Interchange Format, and is the most used lossless image compression format on the World Wide Web.
Definition of menopause. 1 : the natural cessation of menstruation that usually occurs between the ages of 45 and 55; also : the period during which such cessation occurs âcalled also climacteric â compare perimenopause. 2 : cessation of menstruation from other than natural causes.
This indicates a mature woman's final period. Although this may seem like a welcome relief from menstruation and the menstrual cycle, menopause results in significant changes to your body and lifestyle. Before this official point of menopause, is a period known as transitional menopause, or perimenopause. This is a stage in which you may notice some hot flushes, irregular menstruation, irregular menstrual cycles and other menopausal symptoms. But firstly, how does menopause occur? To understand this, we need to start from the normal scenario before menopause. After puberty, fluctuating hormones create a woman's menstrual cycle.