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An eleven-month-old baby is approaching one year of age. Their physical characteristics generally resemble those of their parents. At around one year, a baby's weight is seen to reach three times their birth weight and their length 1.5 times their birth length. As the baby approaches one year, head circumference has increased by approximately 10–11 centimeters from the birth measurement, calculated at one centimeter per month. These are measurements taken by the pediatrician at the eleven-month examination.
The baby is moving toward childhood and becoming a separate individual. The word baby is used until one year of age; after completing one year, the baby becomes a child. The baby also gradually begins verbal communication with you. They may say a few words such as babam, mamma and deddi, follow simple instructions such as “take” and “give,” and communicate with you.
At eleven months, the parents' build is an important factor in physical development. For example, the physical development of the son of a father who is 1.90 meters tall and that of the son of a father who is 1.70 meters tall will begin to differ in these months.