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.
Normalcy vs. normality. Normality and normalcy are different forms of the same word. Normality is centuries older, though, and many English authorities consider it the superior form, for what thatâs worth. Nouns ending in -cy usually come from adjectives ending in -tâfor example, pregnancy from pregnant, complacency from complacent, hesitancy from hesitantâwhile adjectives ending in -l usually take the -ity suffix.