periodic law

noun

: a law in chemistry: the elements when arranged in the order of their atomic numbers show a periodic variation of atomic structure and of most of their properties

Word History

First Known Use

1872, in the meaning defined above

Medical Definition

periodic law

noun

: a law in chemistry: the elements when arranged in the order of their atomic numbers show a periodic variation of atomic structure and of most of their properties

called also Mendeleev's law