What describes children who are 1 month to 12 months old?

The term "infant" accurately describes children who are between 1 month and 12 months old. This stage of development is characterized by rapid growth and developmental milestones, such as sitting up, crawling, and, eventually, walking. In medical contexts, infants are often distinct from newborns and neonates, which refer to different age brackets. A newborn typically refers to a baby from birth to 1 month old, while a neonate refers specifically to the first 28 days of life. Conversely, the term "preschooler" is used for children who are usually between ages 3 to 5, which is well beyond the infant stage. Thus, "infant" is the appropriate term for the specified age range.