O / obrŏgātĭo
noun

obrŏgātĭo

gen. obrŏgātōnis · gender feminine · decl. 3rd
a motion partly to repeal; alter one law by another, an obrogation
a motion partly to repeal or alter one law by another, an obrogation: cum duae leges inter se differunt, videndum est, num qua obrogatio aut derogatio sit, Auct. Her. 2, 10, 15; cf. obrogo.