Infant meaning: Infant definition

Infant definition: a child during the earliest period of their life, especially before they can walk; baby.. See examples of INFANT used in a sentence. An infant is a very young child, especially before he or she can walk. Learn more about the word's origin, usage, synonyms, and translations in different languages. An infant is a baby. When you were an infant, you weren't able to walk, talk, or feed yourself (but you had a pretty mean burp). The meaning of INFANT is a child in the first period of life. How to use infant in a sentence.