1. the first milk produced by mammals after giving birth, which is rich in antibodies and nutrients
Usage: medical; biological

Examples

• The newborn calf received vital antibodies from its mother’s colostrum.
• Colostrum is especially important for building the baby’s immune system.
• The veterinarian emphasized the importance of colostrum for the puppies’ health.
• Human colostrum is typically yellowish and thicker than regular breast milk.
• Farmers ensure that newborn livestock receive colostrum within the first few hours of life.
• The colostrum contains high levels of protein and immunoglobulins.