An infant or baby is the very young offspring of humans. a newborn is an infant who is within hours days or up to a few weeks from birth.. Infant n. a child in the earliest period of life especially before he or she can walk. law . a person under the legal age of majority; a minor Translations of infant. infant synonyms infant antonyms. information about infant in the free online english dictionary and encyclopedia. infant feeding In basic english usage an infant is defined as a human child at the youngest stage of life especially before they can walk or simply a child before the age of one.[1] Infant mortality n the statistical rate of infant death during the first year after live birth expressed as the number of such births per 1000 live Infant definition a child during the earliest period of its life esp. before he or she can walk; baby. see more. Shop for infant-coats at target. choose from infant toddler boys' outerwear genuine kids from oshkosh® jacket infant toddler girls' outerwear genuine. Infant formula is a food manufactured to support the great adequate growth of infants under six months of age when fed as a sole source of nutrition[1]. Apparel toys and gift sets for kids 0-7 years. Receive international certification | infant massage teacher (cimt) | pediatric massage therapist (cpmt) | worldwide certification