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.
Many girls start puberty between ages of 8 and 13, and have a growth spurt between the ages of 10 and 14. During puberty, itâs important for girls to maintain regular exercise and a balanced diet in order to ensure proper growth and development.nce their period starts, girls typically gain another 1 to 2 inches in height, reaching their full adult height by age 14 or 15. However there is a very broad range of time in which girls hit puberty-related growth spurts.