1) A condition occurring in a foetus or newborn due to in utero ethanol exposure when the mother consumed alcohol during pregnancy. It is characterised by a cluster of irreversible birth defects including abnormalities in physical, mental, and behaviour development (such as foetal growth retardation; mental retardation; attention deficit and disruptive behaviour disorders) with varied degree of severity in an individual.

2) A disorder occurring in children born to alcoholic women who continue to drink heavily during pregnancy; common abnormalities are growth deficiency (prenatal and postnatal), altered morphogenesis, mental deficiency, and characteristic facies - small eyes and flattened nasal bridge; fine motor dysfunction and tremulousness are observed in the newborn.

3) Developmental abnormalities in infants born to alcoholic mothers, including characteristic facial appearance (microcephaly, maxillary hypoplasia, short palpebral fissures, and short upturned nose), growth deficiency, delayed intellectual development, motor retardation, joint abnormalities, poor coordination, and irritability. The pattern of abnormalities varies and may include additional oral, ocular, cardiac, urogenital, cutaneous, and other abnormalities.