<prompt> Definition of low birth weightWt 2kgWt 1.5kgWt 2.5kgWt 1 k  <response>: Some important definitions in Neonatology Low birth weight: Birth weight of less than 2.5 kg irrespective of gestational age Very low birth weight: Birth weight of less than 1.5 kg irrespective of gestational age.Extremely low birth weight: Birth weight of less than 1.0 kg irrespective of gestational age Neonatal: First 28 days of postnatal life. Preterm:Less than 37 completed weeks of gestations Term: After 37 completed weeks of gestations Post term: After 42 completed weeks of gestations Past Dates:After 40 completed weeks of gestations Stillbirth: Delivering dead fetus after 28 weeks of gestation. Defn changes with the country Abortion:Expulsion of products of conception before 28 weeks of gestation. Small for Gestational Age SGA:Weight below the I Oth percentile for the gestational age Large for Gestational Age LGA:Weight above the 90th percentile for the gestational age Appropriate for Gestational Age AGA: Weight between 10 lh 90th percentile for the gestational age 