<prompt> LBW is defined as birth weight less than: Repeat2 kg1 kg1.5 kg2.5 kg  <response>: Ans: D . 2.5 kg Ref: Nelsons Textbook of Pediatrics. 19th EditionExplanation:Some Important Definitions in NeonatologyLow birth weight: Birth weight of less than 2.5 kg irrespective of gestational ageVery low birth weight: Birth weight of less than 1.5 kg irrespective of gestational ageExtremely low hirth weight: Birth weight of less than 1.0 kg irrespective of gestational ageNeonatal: First 28 days of postnatal lifei reterm: Less than 37 completed weeks of gestationsTerm: After 37 completed weeks of gestationsPost term: After 42 completed weeks of gestationsPast Dates: After 40 completed weeks of gestationsStill birth: Delivering dead fetus after 28 weeks of gestation. Defn changes with countryAbortion: Expulsion of products of conception before 28 weeks of gestation.Small for Gestational Age SGA: Weight below the 10th percentile for the gestational ageLarge for Gestational Age LGA: Weight above the 90th percentile for the gestational ageAppropriate for Gestational Age AGA: Weight between l0th and 90th percentile for the gestational age 