Hypothalamic Amenorrhea. Amenorrhea simply means the absence of menstruation (one or more missed menstrual periods), and it can be caused by a variety of things, including problems with the reproductive organs or hormones.
Normality is an ambiguous measure of the concentration of a solution. It needs a definition of the equivalence factor, which depends on the definition of equivalents. The same solution can possess different normalities for different reactions.
Learner's definition of NORMAL. [more normal; most normal] 1. : usual or ordinary : not strange. a normal day. He had a normal childhood. These little setbacks are a normal part of life. Our normal [=regular] business hours are from nine to five. a potato twice as big as normal size. Despite her illness, she was able to lead a normal life.