noun, Psychiatry. 1. an inability to speak, due to a physical defect, conscious refusal, or psychogenic inhibition. Origin of mutism.
1 A new study finds girls are developing breasts earlier than ever before; American boys and girls are entering puberty about five years younger than they did in 1920.
Birth rates among American women ages 20 to 29 years old hit historic lows in the years right before and after the Great Recession, according to a new report that raises the possibility that a major shift in the ages when women tend to have kids is on the horizon.