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.
Medical Definition of normal. 1  1a: according with, constituting, or not deviating from a norm, rule, or principleb: conforming to a type, standard, or regular pattern. 2  2: occurring naturally and not because of disease, inoculation, or any experimental treatment normal immunity.