preweaning

adjective

pre·​wean·​ing ˌprē-ˈwē-niŋ 

variants or pre-weaning

: existing or occurring before an animal or person has been weaned

preweaning mortality among calves

preweaned

ˌprē-ˈwēnd 

adjective

or pre-weaned

preweaned calves

Word History

First Known Use

1916, in the meaning defined above