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.
the changes in a girl s body during puberty usually take place between the ages of eight and 18 years most girls will have finished puberty around the age of 15 they will have breasts and pubic hair will menstruate have a period every month and will be able to get pregnantirls usually complete puberty by ages 15 17 while boys usually complete puberty by ages 16 17 the major landmark of puberty for females is menarche the onset of menstruation which occurs on average between ages 12 13 for males it is the first ejaculation which occurs on average at age 13