1. Regarding the consumption of nourishment that precedes the beginning of milk flow: Prelacteal feeding of a newborn baby with carbohydrate-electrolyte solutions is to reduce initial weight loss until breast feeding is fully established.
2. Pertaining to the jaw structures of marsupials prior to milk teeth: In her biology class at school, Nancy learned about the prelacteal mouth formation of kangaroos, wombats, and opossums in Australia that were thought to be traces of dentition before the first teeth appeared.