Большой англо-русский и русско-английский словарь
1) кограница
2) -граничный
3) кограничный ∙ - chain coboundary - coboundary formula - coboundary group - coboundary homomorphism - coboundary mapping - coboundary module - coboundary operator - coboundary relation - elementary coboundary - n-dimensional coboundary - oriented coboundary - singular coboundary