metachronous

[ muh-tak-ruh-nuh s ]
/ məˈtæk rə nəs /

adjective

Medicine/Medical. occurring at a different time than a similar event: metachronous tumors.
Geology. composed of parts formed at different times: The older late-glacial shorelines are metachronous.

Origin of metachronous

meta- + Greek chrón(os) ‘time’ + -ous