colostrum

Definitions

1. A form of milk produced by the mammary glands in late pregnancy and the few days after giving birth.
   uncountable, usually
2. A mixture of turpentine and egg yolk, formerly used as an emulsion.
   uncountable, usually

Equivalents

Examples

“The researchers isolated the antibodies from the cow's colostrum, the first milk produced after birth, which has very high antibody concentrations. They gave these antibodies, extracted from the colostrum, to 10 volunteers and gave another 10 volunteers extracts from colostrum of cows that were not immunized against the traveler's diarrhea bacteria.”

“This valuable fluid—colostrum—plays a number⟳ of important biological roles, including helping improve⟳ an infant's immune system. Nevertheless, many humans intuitively perceive colostrum as “sour milk,” which should not be given to infants. Other species do not make⟳ this serious mistake⟳.”

CEFR level